I am on the same situation as you.
However, those agencies I have been in contact with (mainly from the north) suggested that I fly out & back into Thailand. This is because land border runs have become somewhat of an issue nowadays with hard questionings.
Now, this doesn't mean you won't be allowed it. But you need to have a reason for being in Thailand entering as visa-exempt. Especially, if you have utilized every option for staying for a long time. In this case, you will increase your odds if you have a proof of stay (e.g. hotel booking), return ticket to your home country within 30 days , and most importantly at least 20,000 baht in cash.
To be honest, covid extensions are all warranted because they didn't want everyone to leave, and everyone couldn't leave. So if you have had covid extensions on your passport, you shouldn't worry. The same goes with ED Visas or any other Non-immigrant Visa because these are legit purposes for staying long-term in Thailand.
The problem comes if you come and stay on multiple tourist visas on a continued basis, and border runs for that matter. This is where you will be most likely by hard-questioned and worst case denied. The odds are in your favor if you follow the above guidelines, and haven't had an issued tourist visa since pre-2020.
For now, you should avoid land border runs (as I have contacted to agencies who have stated this) and better fly out and in. Tip: don't act like your are doing a border run, try staying in a foreign country for 1-2 weeks so you seem off the radar a bit.
Good luck.