I had no idea the .garden TLD even existed. Having just checked Porkbun, it seems like they go for $1.54 which is pretty cheap. No wonder they're being abused.

If you have a cheap TLD of course bad actors will buy a bunch.

It is absurd to consider a TLD bad just because it's cheap and its names were registered by some bad people. It's a bad case of stereotyping. Filters need to be better than this. There are plenty of good names within a TLD.