For majority of users the features office provides is a waste of their time.
The usage experience on MSOffice is unpleasant enough to motivate seeking an alternative.
Folks in tech tend to be more worried about UI and UX and frankly tend to be nit picky when something doesn’t look or work like they would have designed it.
I have seen a lot of software products fail over my career that was designed by developers who created UI that they liked and thought was the pinnacle of interface design. Users hated it. Most devs don’t think like regular users.
Complaining that something is wrong because it differs from MS demonstrates just such ignorance. Users not understanding that something could be different from MS and therefore better is how we got here.
Ultimately a UI and UX needs the “U”