I like how they state the following:

As of July 1, 2023, we are increasing the API limits for our free API usage from 60 to 100 Queries Per Minute for those using OAuth authentication.

They're making it sound like they're increasing the rate limit, whereas they're actually changing it from 60 queries per user per application per minute to 100 queries per application per minute. So if you had a 3rd party app with 1000 users, you'd have 60 queries each minute for every single user, now all those 1000 users will have to share 100 queries each minute (so that'd be 1 query per user every 10 minutes), unless the app developer is willing to pay up.