If your one drive folder reaches the cap it will stop you from saving files to one drive (which MS sets as a default location). Then it will ask you to pay. There is a possibility at this point that it will wipe your data if you disable One Drive before backing up your files to a non One Drive folder.
It won’t brick your computer, it’s just really pushy marketing with a chance of wiping some data.







Every single criticism in this post could be equally leveled against windows and its users. Especially the part about servers not being updated. Your second paragraph is also a classic example of survivorship bias.