1HBH will always be here because some European and So. American players will have one.
The U.S. is sold on 2hbh due to Agassi, Serena, Venus, Chang and Courier. Nothing wrong with that at all.
The "player" executing the 1hbh makes it a case by case basis. Because Tsits sucks at it many times in a match doesn't mean the next guy will be the same. Certainly, not Musetti.
Because James Blake had problems doesn't mean the next American or Int'l player will have the same.
At this point, you should understand it's the player's overall game, not necessarily the stroke itself. Otherwise, Musetti should not be top 10. And Tsits should have never made a slam final or won YE.
--- Players aren't made in a factory like cars or computers where the speed and processing results can be calculated with accuracy. They are dynamic.
A great coach (Cahill, Gilbert...) who helped X 2hbh player reach new heights doesn't always mean the next he/she with a 2hbh will too. It's the individual's talent, determination, and persona and it always will be. Sure many 1hbh player have a difficult time returning high kick serves but you'll see some 2hbh players also have the same difficulty.
Each player is unique and dynamic (height, weight, athleticism, mental). You learn and adapt. It's really an athletic game of chess.
Look at Musetti in the semis on clay. Perhaps his HC results will also pick-up. Wawa won 3 slams against the best 2hbh players in the game of all-time (Rafa and Novak); HC and Clay.
Just don't underestimate the 1hbh. Still if I had to choose today, I'd pick the 2hbh b/c of Sinner/Alcaraz but would definitely want to have the 1hbh slice and volleying skills that most natural 1hbh plyr have. However, Wawa & the declining Tsits have sub-par net and slice strokes.. so there goes that argument.
Who will vote for him, is undecided. ️
Each of you can go to your local backboard. There, you can count how many good 
