I think you have not explained why do you think lock ins are good apart from saying that it may prevent users from being subjected to something bad aka boogeyma

I think you have not explained why do you think lock ins are good apart from saying that it may prevent users from being subjected to something bad aka boogeyman companies who try to thwart right to repair use. In other words "you cannot repair your own device for your own good, now give us more of your money".