Recenly, in Chat it was suggested by an SF moderator:

One side issue is, given the volume we're seeing now, I don't think users have enough daily close votes.

The response by an SE employee was:

if you put in a meta SF post for that, and it gets some upvotes, we'll look at it for sure

So, here's the post, Let's have some upvotes!

Optionally, it would be even better if there were a few levels:

• Everyone starts with the standard 25 close votes per day
• Every 500 close votes you cast, you get 5 more per day, to a maximum of 50.

Or something like that... the idea for levels of extra close votes is really just off the top of my head. I'd be fine with it being a simple increase in the number per day for everyone.

Can we also have an increase in the number of close vote reviews?