Can you be denied entry to Thailand even with a DTV visa?

Have you used the visa yet? Or first time entry?

Some immigration officers might be more difficult than others.

I’d recommend learning local manners ( wai properly, speak at least some basic Thai ) , in order to set up a good atmosphere when you have to meet them.

Thai ( and like most I’d say ) are very appreciative of anyone making a genuine effort into trying to be learning / part of their culture.

Yes most definitely

All visas for all counties are not a guarantee into a county. A immigration officer can refuse entry for any reason they see fit for!

And your visa can be revoked at any time either directly as a result of something you have done or a wider issue! Just look at India right now.

How likely is it? Well that all depends on who you are, what you’ve been up to

If you have a visa that is honestly acquired, you should have no reason to be concerned about this

A visa only shows the purpose of your visit. If the immigration officer isn't satisfied with your answers regarding the reason for your visit you can be denied entry.

Not a dumb question some people get refused yes if don't meet the criteria, DTV visa is only valid if you continue to meet the criteria set out and if an immigration officer thinks you no longer meet the criteria or can't show that you do them yes can be refused entry

No visa guarantees entry into the Kingdom it’s ALWAYS at the discretion of the immigration officer at the point of entry. That said, certain visa types tend to raise more red flags, especially when misused. Tourist visas and visa exemptions, for instance, can lead to issues if someone is effectively living in Thailand long-term on short-stay permits.

The most reliable and least problematic options are typically visas like the Non-B or Non-O, provided they were obtained legally and used in line with their intended purpose.

As for the DTV visa, based on the current landscape, it appears to be a safe and legitimate option for entry assuming your application was honest and submitted in good faith. For example, if you applied under the soft power route to study Muay Thai, and you genuinely attend the classes you enrolled in, there should be no issue. The same goes for the digital nomad or freelancer route as long as all documentation was truthful and not fraudulent, there’s little cause for concern.

Yes

It's not a dumb question. People with visas get refused entry into Thailand for many different reasons.

Having a visa doesn't guarantee entry