Sorry, but I don't understand how this point justifies a 35 second shot clock. Why would the size of the court matter?
The FIBA shot clock is used in Canada for majority of provincial rep league games starting from U14/U15, regardless of the court size.
Obviously the US national regulatory "experts" have a different opinion than you due to a variety of different factors which are variables.
The high school court is a different size, the high school players are of different ages and skill levels, public schools are not the same as private leagues. and the states are just now starting to institute shot clocks on a trial /optional basis.
If you read the article, California has been using a shot clock for 45 years even though it wasn't approved nationally.
States can do what they want but I don't see how the 5 seconds makes a difference when there wasn't any shot clock previously being used.
There are so many differences between the high school & college game, which leaves plenty of room for differences of opinions among the 50 states.
The article that I posted also mentions the different state high school divisions or conferences some of which may be allowed to use a shot clock while others may not.
It's all in the judgment of the state associations that are entrusted with teaching kids how to play competitive basketball, which some high school kids are playing for the very first time.
The kids in some schools don't know how to play very well, especially in small towns & small schools without many athletes to field teams.
If a team wants to run fast, then they can still run fast even though the shot clock allows more time.
So in effect, the more lenient shot clock benefits kids who are young & learning and may not ever advance to play in college.
It's just like Little League baseball has different rules than college or the pro leagues.
Do you think that high school baseball players should only use wooden bats, or that college baseball players should only use wooden bats?
There's a transition that players need to make when they move up from one level to another, that's all.
You may not like it but that's the situation in the US right now.
It can change in the future if states want to go their own way or the national decision makers have the courage to mandate a shorter shot clock.