If it is only donation, nothing to worry about, but if they demand anything for their own agendas in return, I'd say it's concerning indeed.
Exactly. But my question here is why the heck do banks have to do this? Control? This is something fishy for me to be honest. Well on the other hand, giving a donation to the Bitcoin core team is for me a very generous way of saying thank you for the job well done. Donated funds can also be used for future upgrades and improvements for sure.