Yep. And Mae Sai appears to be shut down, even with a visa for Myanmar. Right now the only border I've heard of being useful is Chiang Khong, but that's only because they haven't started enforcing the new requirements issued by Laos this morning. Changing hourly right now, and many people are in a bad position visa wise...
the ICU bills add up quick. You haven't seen all the GoFundMe pages set up to pay for medical bills by foreigners coming off of bikes in the time you've been here? I'm sure it's an unpleasant experience being in a position where you're unable to pay for the lifesaving treatment required... And that seems to happen often. I don't agree with your advice, it's unsound. Some may choose going without after careful consideration, but it's not something you should recommend to people. The risk and consequences can be dire.
A student visa is 2000 baht. You must apply for it at an embassy or consulate and have documentation from your school or university to apply for and be granted a non-immigrant visa for education.
What does this have to do with a Thai visa? Here we only talk about what color the visa is, the type of pen used to signature in the visa, how many days on 90 day single entry visa, and how the visa smell.