Viper is not hard, and does not need simplification.

[Rhael]

People who play the game with their eyes glued to their hotbar will understandably find viper straightforward to play - it is, if you're willing to make that concession.

Out of every job in this game, viper is one of the ones that requires me to look at my hotbar the least, and I don't even use the vipersight gauge outside of tracking Uncoiled Fury charges. The mental load of doing little more than alternating between the positionals is really not that high, and even then - you get a buff icon that tells you which positional you will be doing three gcds before you even get to it. This issue really is with an understanding of game fundamentals, not viper's design. Paying attention to your buffs and debuffs is an incredibly foundational skill, which viper's design - as with many job designs - assumes the player understands. Changing the job's design to account for a lack of fundamental understanding regarding how the game itself works is, at best, extremely misguided.

Like I said, I don't consider that normal though, that's dangerously distracted driving.

Keeping track of your rotation's current state is more analogous to keeping track of your car's current state - your speed, positioning, managing blinkers, etc. That's not distracted driving. That's just driving. If someone needing to remember to use their blinkers or watch their speedometer is too much of a mental load, then maybe they shouldn't be on the road.