Like many things to do with Thai visa’s terminology is key. People use a certain phrase which doesn’t actually mean what they are referring to.
I haven’t read the thread you’re referring to but he may not have been calling you a liar. He may have stated the fact that you weren’t “deported”. You were refused entry.
If you’re so touchy about words or terminology then perhaps this group isn’t for you. We get pedantic over terminology because it matters immensely.
FFS you weren’t deported. You were refused entry. An entirely different thing.
They may have used the words “deported” because they sent you back to Singapore but you would have no stamp in your passport because of that nor would you be blacklisted to enter Thailand via some other means (preferably with a visa).
That isn’t true. There is no 5 times rule. There is no rule. It’s up to the immigration officer to decide. It could be your second time trying visa exempt or your tenth time.