https://github.com/LemmyNet/lemmy/issues/5613
There’s two “full time” Lemmy developers, and one of them just added a repeating dialog box that will pop up regardless of instance asking for money to be sent to his and another lemmy.ml admin’s personal accounts as a salary.
KDE Plasma introduced a yearly popup for donation and it stirred controversy. Apparently it worked quite well to get donations.
I think it’s acceptable and not an advertisment. It’s a reminder for the service you’re using and you should donate to keep it going.