IMO everyone that bikes should ride the way it pleases themselves. In so many of the threads, the "real" cyclist try to dictate how, what, where, what to wear, what saddle, and what bike is acceptable to ride. To begin with not everyone has $10,000 to spend on a bike, so price is the prime point of what one can ride. Then there road bikes, mountain bikes, fat bikes, fixies, bents, and trikes, and gravel bikes. Pick the type or types of biking you like and buy the bike that works best for that style of biking.

Then-------------- ride at the speed and cadence that feel right to you. If you want to train for and race that is fine too. Just remember if that is not your bag, as I say, ride to please yourself. Cycling should be fun first.