Which one "panic" do you expect? Omicron in 90% of cases has no symptomes, in 9% feels like a flu, one night with high temperature and that's all. Nobody cares even to make test.
I had crossed Thai border in 5 min in BKK, no forms, no questions, they just stamp my passport... By the way: I had flight via China mainland and Hong Kong and arrived in aircraft full of Chinese. Already 12 days no any symptoms of Covid