Whatever. The point is that if the interpretation of the rule is what you say it is, play should be stopped immediately if the attacking team has possession of the puck or if they gain possession of the puck without the other team touching it.
The alternatives:
(i) stop play when there is such contact, bringing in the dawn of a new dead puck era.
(ii) don't stop play, disallow goals for indeterminate periods of time, bring on both a new dead puck era and massive frustration.
(iii) don't stop play, waive off goals only if the goalie still plays goalie (instead of transitioning to a defender), which was how the rule was being enforced.
A huge percentage of goals are either scored from the 22' from the goal line to the dot in front of the crease area, or if not, are scored because there are offensive players present in that area. The crease extends 6' into that area right in front of that, and 4'6 on the sides 1' beyond the goal on each side. It's pretty obvious that with the size of NHL players, and the giants that make up NHL goalies, stopping play (or disallowing all goals) because there is contact between a player who has part of their body in the crease and a goalie who has part of their body in the crease for indeterminate periods of time will have have a very large effect on goal scoring. Depending on how one draws the prime scoring area the goalie can stop worrying about shots on net if there is contact within 8% to 20% of that area. imo that's a really big deal, and the sort of thing that could break the game. (Note: those percentages are probably much higher when considering parts of bodies as opposed to ice area. That geometry would require a lot of work.)
There are any number of potential rules solutions for this. Scoring being down this year seems only related to lower PP opportunities. However, I don't think the rule has been called as you want it to or think it should (although the way it is inconsistently called is frustrating), and I think if it were to be consistently called as you think it should that it would very much decrease scoring. I can't prove the hypothetical, obviously, but I think the reasoning is fairly clear.
My other claim, which I think is obvious, is that *if* interference were to be called as you think it should, play should be stopped or continue with conditions for stoppage in the vein of hand passes or puck contact with high sticks. You just can't continue play in a situation where the goalie no longer has to play their position because goals can't be scored. imo that's obviously pointless.