iirc the last time it happened to me, i just needed to fix the uefi entry which wasnt that bad.
(just remember to have a usb stick with a live image ready)
if it were to overwrite your bootloader that would be a way harder fix.
i use a different drive for my windows installation because that happened to often,
and i swear it once managed to whipe the bootloader on the linux drive.
i have no idea how it did that,
but i avoided starting windows using the grub entry since then.
i think around 2013 i started occasionally tinkering with ubuntu,
i then quickly started distrohopping
(mint, debian, kubuntu, antergos and probably more)
in 2017 i started seriously using antergos (i3wm) on my work pc
i was still only occasionally tinkering at home,
untill 2022, when i learned about proton,
and fully migrated my private computer from win 10 to fedora(kde)
nah no chance anyone will 'pump' this crap,
i spent a bit of time on wsb reading what they think about it,
all i hear is people wanting to buy puts on it.
if anything its gonna go like the robinhood ipo where all the users that bought in before the ipo got shafted
im almost sad that its linux that became the dominating open source kernel instead of "GNU's Not Unix! Hird of Unix-Replacing Daemons"
(hird stands for "Hurd of Interfaces Representing Depth")
iirc the last time it happened to me, i just needed to fix the uefi entry which wasnt that bad.
(just remember to have a usb stick with a live image ready)
if it were to overwrite your bootloader that would be a way harder fix.
i dont remember if the second ever happend to me