Most users (at least in my observation, in the instances and communities i’m on) on Lemmy are privacy minded, open source fans, linux enthusiasts , etc.
Google is evil and will suck up any data they can find on you and sell it to anyone that will give them a buck. Lemmy users don’t like that. (me either)
Google also makes a lot of money selling ads that are crafted for your likes based on the data they steal from you. Lemmy users also don’t like that (me either).
Ad blockers will hamper some (not much) of google’s ad revenue so they don’t like them. many users use Ad Blockers ( I use an ad blocking DNS server)
Recently Google announced that their Chrome browser would not allow ad-blockers because it’s changing the functionality that ad-blockers use (Google sucks, don’t use Google stuff)
So that is why it’s showing up an Lemmy a lot right now.