I think if MIL visited us a few times a week I would go crazy!
As a new mum I personally find it suffocating having people wanting to come round weekly.
I want to chill with my baby, get to know them, help them learn, sit in whatever clothes I want and not worry about the housework that needs doing.
To have someone wanting to come round every week, several times to 'cuddle the baby' would drive me mad.
Appreciate not everyone feels like this though, so each to their own.
When we see MIL/FIL they are very much in babys face. They come in, bypass DH and I and make an immediate dive on DD.
They do nothing to help us. They wont even go and make themselves a tea or take their dirty cups out.
Instead they demand 'a cuddle' where we have to present DD to them, in a suitable position to be held (because they dont seem to be able to switch positions of her on their own). They then just look at her.
They dont talk to her, they wont read to her. No singing. No playing.
Just expect her to lay flat in their arms while having endless photos taken of them and her (never us).
They also have no clue how to calm her when she gets irritable and then refuse to give her back.
For these reasons, I dont like them holding her. I let them, briefly, because im not a monster, but it makes me feel very uncomfortable seeing my child upset with people shoving a camera in her face while she is crying.
Speak to your family. There has likely been something happen that you may not perceive as an issue and its made them uncomfortable.
I wouldnt go in asking to cuddle the baby when its clear there is something wrong, that could spark more frustrations.