The original post is NOT Scots, please don't spread misinformation about the language more than internet people already have. Scots writing looks way different than this. The post is just English with some of the words being spelled eye-dialecty.

Among other things, you can tell by all the English words like "standing", "light", "thought", which would be "staun(d)in", "licht", and "thocht" in Scots (although "standing" could probably be used too). Reading the Scots Wikipedia page in Scots should make it obvious

Relevant Scots drama from a few years back