I have been accused of worse. OK Attitude, you asked fairly, I give a plain answer. Get rid of H3 while the player is still healthy, it just isn't worth it for many.
If a player is aspiring to be a powerful offensive player (which the big majority who buy H3 are) and slaps H3 on the FH... potential for shoulder injury is larger, more frequent the better one gets. Why? One must REALLY bring a powerful impact to get the great offensive potential out of it. It requires professional help and supervision and years of training to get that kind of bat speed and impact. The stroke needs to be near optimal to get that impact. The ones who are trained by former high level Chinese players usually get this impact after so many years training under them.
The ones who do not do this training and develop an efficient stroke and ability to deliver power at impact... they try hard, real hard, like 130%... and with an inefficient stroke, the stress on the weak link adds up... that weak link is the shoulder, sometimes the wrist. under-trained H3 players going for it all after so many months or years end up jacking up their shoulders.
It is even worse with the years to decades long H3 FH playing players who are TTR 1800+... The latest ABS ball requires another 10-20% more power at impact to get what they got from a cellulose 40mm ball...so they swing harder, even with great efficient stroke, there is still stress, that extra all out effort impact after impact adds up, especially at that level where the player already learned how to deliver huge impact force and is going for more.
That is my argument against starting out a playing career using H3. if a player isn't gunna go constantly for max+ shots, sure, use it all day long. Otherwise, it isn't worth the risk IMO.
We should here Sergey the Tsos opinion on this, as he is a renown H3 expert.