it's flagged for DTV, LTR, Elite. It can also be a point they hassle you for when you land on exempt, tr, metv. Glad it worked out for you in your individual case where you got lucky
Just note that there is a high chance of being pulled aside for questioning if you land in BKk a few days before the end of the METV. You may face less hassle at other points of entry
it will depend entirely on the person you get that day and your stay history, but it's really not a good idea to fly into bkk if it's extensive. They are aggressive about pulling people aside. Fly some place else to enter
As someone who came in on a METV 2 days befor the end, don't fly into bkk/ dmk. High chance of being held for questioning about what are your long term visa plans