“No that’s your ill informed opinion projected into Rav Moshe.”
No, it’s how he paskened and everyone knows it. You need to stop, because you are seriously embarrassing yourself.
As I personally asserted earlier, if there were a change in metzius then it could be worth reevaluating and maybe Reb Moshe’s psak would no longer apply. Hundreds of posts in and not one person has given any evidence or even theory of a change in metzius. You, not unlike Richmond, keep alluding to some mysterious device without naming it.
In short, if there was a change in metzius between Reb Moshe’s psak and now, tell us what it was. If not, we’re going to continue to assume you’re just making stuff up and have no real answer.