Linux was not muscled like that in 1991 - it’s first, barebones kernel was released in September of that year.
I remember installing Linux on a 90MHz 486 in the mid 90s and it barely ran X server with a simple window manager. And if the machine was turned off while Linux was running, you might not be able to boot again.
Linux now, however, is unrecognizeably better.
Remember the incident at the docks when the revolutionaries threw the T-Mobile imports into the harbour? Talk about high tariffs!