That still doesn't make me all the way wrong since you basically already confirmed that no longer scales PAST lvl 50 due to a "change of internal mechanic". SE should've retooled Physik into ANOTHER heal ability that scales off of INT at that point then like "Physik II" or something that switches the skill into a new mechanic like how other SMN abilities get upgrades as they level. If I have to make a guess, Physik is probably one of the OLDER abilities that never get a numeral upgrade for SMN'rs.
WTB a complete SMN redesign/overhaul.