Firefox has to many advertisements about an update after an update

As a public librarian, when I do a monthly update for the public computers I also update Firefox. Every time I do a Firefox update, I have to at minimum open Firefox twice, once to get the "here's a bunch of advertising for a thing you already use!" Out of the way, and then at least another time so I can make sure there isn't another ad page, so I can clear the history. Doing this every time I update Firefox is just a small pain point, but I don't enjoy having to do it a dozen times when I update our computers each month, and this month I had to do it three times because of the number of advertisements.