Not heard of large scale demographic changes in Punjab, but certainly in Dev bhumi UK, esp in chardham areas. Recent protests there against UCC is proof. Large scale ghettos in Delhi of Rohingyas. There is not much labor or job opportunities in Punjab for them to flock there for whatever reason.
Funny that dange karwaye woh aur dar bhi dangon se, wah bhai! Most of recent riots in Nuh, Malda was started by stone pelting on shobha yatra or Kanwariyas from rooftops by samuday vishesh.