I don't consider it an assist. Just courtesy.
I can't answer the poll other than "no" they shouldn't be "forced". They should do it because that's how one should play voluntarily.
Which both Ricky and Phil did.......Ricky actually stopped right there and clearly was attempting to facilitate the last group to play in. I'm actually sure Phil would have also (and his interview seemed to indicate that as well - the confusion wasn't about facilitating the finish, but more about how it was processed), but it seemed he was just into his zone too much to realize it.
In fact, I think both Ricky and Phil took care to work their putts with a minimum of delay. I thought they were a bit more crispy than usual compared to their normal process.
For SURE, Phil could even have drug his feet a bit and he definitely didn't do that.
For that matter, Rory took a big chance to get 'out of his rhythm' to tee off when he did.
Seems to me, both groups were fantastic in meeting the clear opportunity to finish the tourney before dark.
I was impressed. The only place the PGA stepped in was to facilitate the approach shots. The rest was all the players being decent players.
(Just my impression, but Phil did NOT seem 'upset' about allowing the approaches, he just seemed confused that they didn't follow the normal process he was used to - frankly, he hit and was crisply moving to finish the hole (i.e., doing his part to help the other group finish). And clearly Rory wasn't upset either, I think he was just under the assumption that they were playing in together - the PGA decision clearly settled it. Two people having two assumptions does not equal upset or in conflict.)