the only cases where this was appropriate was muslim bibiaan being banned from masjid and they asked if they could come to gurdwara (on the way to masjid) then the granthi offered if you want to pray the way you know you can do that in this other part of the building . The other was the masjid was literally underwater.
Muslims know that they are offending us if they do their namaz in hazoori , that's why when they came to Amritsar to thank sikhs for helping the Kashmiri kids get home they prayed on road outside not inside parikarma
I think this part of a larger Indic problem.
Treachery has always been part of our DNA, however in our history and our Pre-Sikh heritage we have never dealt with treachery.
There has never been any repercussions against traitors.