Its on a concrete base so no mole access

It is a plastic compost bin which rules out a mole. Could.be too hot and I do compost onion trimmings and orange peel

My compost bin seems to be acquiring more and more worms.
Opening the lid there is a ball of small worms in the top.
Although I expected worms I just didn't expect the quantity.
Should I remove them or leave them where they are?