Yes, I've climbed the hill, don't believe I've gone over yet tho...
Lineoleum is hugely superior in many ways, but common (modern) sheet vinyl is equal (or better) in the most important ones for a darkroom. I once set down a 1 gallon plastic jug of distilled water on my darkroom floor before heading out of town for the weekend, Came back, unloaded the exposed films from the trip, and went back to work for the week. I came into the darkroom to run films and lifted the jug to find it had leaked a little bit, nothing awful, but it had created a huge swollen, water soaked lump in the linoleum (the jute/linseed oil variety). Three days later it had dried up and was invisible, the floor back to perfect normal. Modern vinyl would have not been effected at all - totally impervious to all - tho I bet there'd have been a puddle to wipe up.
Old-time linoleum is used in operating rooms because it is naturally antiseptic, (anti-fungal too?) because of the linseed oil. Also anti-static. And it comes in much nicer patterns, like marbled paper and in vibrant colors. No fake terrazzo tile or slate. I'm afflicted with a need to make what I make aesthetically pleasing, and linoleum fit the bill.