Another reason why it would be a great acquisition for them is that it would give them a huge competitive advantage over other blockchain analysis firms. They'd be the only ones able to provide data on Wasabi CoinJoin'ed transactions.
Wouldn't it be more likely for all privacy minded users to abandon Wasabi entirely? Even if the current bad reputation isn't enough, that will end the moment it's bought by a blockchain analysis company.
I like to think that everyone who really understands privacy has already left Wasabi; being acquired by a blockchain analysis firm may not matter all that much to current users. zkSNACKs would also just continue to claim users are fully private due to their open-source client code and zero-knowledge components of the system, just like they did when the 'Blacklisting Update' came out.
Also consider how many companies have some (sometimes shady) parent company that simply nobody knows about; this could maybe be done in a low-key way that doesn't pull too much attention.