Possible in 7.1 to substitute an image with a new image - same name - and keep associations?

So my problem is this. Just realized that the icons I use in a website - over 100 and in over 50 pages in different combinations - are shitty in darkmode. So I need to substitute and re upload them with the same name. Do I have to re insert every new image to every single place it was previously uploaded or is there a way to expedite this (import.export or something)? An older post from @paul2009 suggests that I am doomed but its as old as 2019 so I hope for the opposite. Fact that I can upload 2 files with the same name, worries me so is there a way to rename the "unique Squarespace URLs" mentioned?