The comments by people consist of nothing but emojis and occasionally one to five words.

Scattered around that, you'll also find a lot of bots spamming websites that either sell cheap stuff like LED lighting and swamp coolers with ridiculous markups (about 10x) or are straight up scams.

Those could be filtered out easily but instagram just cares more about the traffic than their users.

With moderators leaving en masse, reddit will move into that direction. They won't ever get this shitty, but definitely a lot closer than they are now.