Did the lady try to talk to her neighbor first?

OOP does not clarify.

But.

I have seen what happens when you put cardboard boxes whole in the cardboard recycling bin: it's "full" immediately!
I have also seen people who do not remove the styrofoam filling before dumping them.
Or don't even bother putting them inside the bin, just leaving it by the side.
All that gets my blood boiling. This casual carelessness because "it's trash, so what?"

Again, the first step should always be to point this out to newcomers, but.

The fact that OOP basically says "cardboard is nothing" and says they'd burn it instead tells me they just might be the asshole here.

9/10 times it's a legit problem, the neighbour would just ask you nicely. If some nutjob writes you an invoice, you can safely ignore it. Going through someone's trash and photographing indentifying information on the other hand is a felony, so OOP might've just found a way to finance that lawyer for themselves.

But this is one side of a story in which the neighbour went from 0 to lawyer with no warning and OOP (presumed innocent and tidy) is apparently fed up with the entire country because of that. Seems to me pretty escalatory by the only side presenting the narrative.

So giving the benefit of the doubt to the othe side: if you are a messy tenant and do not listen to reason, good riddance to you.

We all know OP didn't fold his boxes at all and just stuffed them in there, blocking up the system. Every time the lady wanted to use the paper container it would be blocked and she would have to reach in there and remove all of his shit. Then properly collapse the boxes and put them back. OP has also been told multiple times to fix his shit and there is a sign above the paper container as well.

The exact same thing happened where I work. Some idiot would just stuff an unfolded box in the paper container and would block it for everyone.

„Wir sind hier nicht in Vietnam! Wir sind in Baden-Württemberg, da gibt es Regeln!“

Als jemand, dem es vor zwei Wochen fast den Fingernagel umgeklappt hat beim Versuch, die "gefalteten" Kartons der Nachbarn in die Tonne zu drücken, habe ich absolutes Verständnis mit der alten Dame. In meiner vorherigen Wohnung hatten wir auch eine Person, der das vorherige Zerkleinern der Kartons sehr wichtig war und was soll ich sagen? Sie hatte Recht. Es passt viel mehr in die Tonne, wenn alle es vorher klein machen. Das bedeutet weniger Nebenkosten für alle. Seitdem bin ich auch Kartonagen-Alman.

Krieg, Krieg bleibt immer gleich

Point number one: throwing boxes into the bin with your address labels on is fucking dumb.

Point number two: throwing boxes into the paper bin without flattening then is also fucking dumb.

Obviously, if that's all the guy did (provided this story has any basis in reality at all) sending a letter from a lawyer is totally over the top and in no way justified. I also doubt any lawyer would stoop to that, but then, they're lawyers, so there's that. On top of that, unless that neighbour owns the property, they have absolutely no business trying to enforce any rules there.

All in all, either there's more to this story, or OP met an actual crazy person. These exist everywhere and their craziness manifests in a variety of ways. Sending legal letters is one of the less scary ones, if you ask me.

Und? Wie hat OP denn die Kartons gefaltet? Ich will ein Fotobeweis, also die Chancen sind eher gering bei der Beschreibung der Nachbarin. Aber villeicht isser ja doch das Arsch?!

Sein Fehler war halt nach BW zu ziehen. Ländle of the Kehrwoche, home of the Spießbürger. Machste nix. /s

Just for explanation: The lady has probably not spent money on a lawyer. The lawyer demands it from you as the "guilty" party (presumed guilty, because no court is involved so far).

If you want to save some money, google for the term "modifizierte Unterlassungserklärung". Hopefully you find good instructions there.

Ist Reddit nicht nur noch alles Bots zum Ragebaiten?

This is one of the many reasons I always destroy anything bearing my name before disposal.

Just fold your boxes like a decent person. It's not hard. Have some consideration for your fellow humans.

That post is AI slop by the way.