Anonymous participant 983 overthinking is good when you deal with bureaucracy. He is right to ask those questions. Some country would scrutinize more but based on my experience applying for visa in Thailand and what I have read so far, I would apply and not worry about this for now.
If you are an employee of your own company, you can have an employment contract drafted to showcase this or have your client draft a service agreement showing that your work can be completed remotely. In my case, I did both and I had similar request from the Vancouver Embassy.
I agree. I have Thai wife and baby. My cousin has a wife and baby and he has to renew his visa every year and it is a pain. I have a DTV and super easy.