Yep, I've seen that as well. Marketers years back always pushed that stuff as "ethanol resistant fuel line" - stuff was absolute garbage!
I ended up doing my own research, and testing as it happened. Found Tygothane / Versilon clear hose in formulation C-210-A to be the best, truly fuel-resistant hose on the market today. I installed miles upon miles of the stuff in chainsaw and weedwhacker / string-trimmer fuel tanks, and the stuff has withstood the test of time without ever getting rock hard. It'll turn a bronze color - that's it! Why everyone sold the yellow garbage as "fuel resistant" is mind boggling.
The very first install of the stuff was on my '74 Yamaha RD350 on both the fuel and oil injection lines back in 2012 - the stuff is still working like the first day it was installed.