I'm not quite in your position as I have stickers coming off a 2017 Beta.
But here's my logic.
If you clear coat on top of the applied sticker, and in the future you scratch or damage the sticker, it will be a real pain to repair.
I would rather remove the sticker then re-apply as required every few years, than go through the faff of getting the sticker off from under the clear coat, and redoing it all again.
In effect have a sacrificial sticker, rather than repainting the tank.