I work in the office 3 days a week in a team of 10 people.
And it's fascinating. A couple of people bring in treats such as bags of toffees or jellies or biscuits etc. Not homemade stuff
It's put in a central place & people help themselves.
We have 1 team member who i suspect has food issues but I've also noticed eats all the treats but never shares or contributes anything
I bring in stuff but less frequently as I very rarely eat any of the stuff as I'm losing weight.
The shelf where stuff gets placed is right beside my desk so I can't help but notice.
It doesn't bother me but it i can imagine it would annoy some.