Do immigration officers in Thailand ask for proof of funds upon arrival?

No never but it is at their discretion .. so have enough and you won’t have to worry about it!

I came in today

I was asked for nothing but my passport

I have never been asked, and never seen anyone been asked. But, why risk it..

Arrived 3 weeks ago, they did not.

I have read somewhere today that someone was refused entry because they didn’t have at least 20k thb on them.

If you have a history of using exempt stamps I’d carry the cash it’s really not that much money but if there asking then there looking for a reason to deny you why not get a proper visa or go home for awhile

No

No never did

If they ask you this question, it's because they already want to deny you entry.

But with the crackdown currently going on, it's likely going to get asked to more people than previously.

Who has and has not been asked literally makes no difference for you. If you are asked, you must have it or you will be denied entry. It's as simple as that. Even if 1 million people before you were not asked, you must legally have proof of funds to enter Thailand as a tourist.

No never..