Upvote:1
The only folks who can accurately answer your question regarding any new laws would be the Immigration Office. With the military government's push towards following the rule of law it is hard to guess how strict immigration will be from here forward.
Your friend might wish to prepare by documenting his illness, bills or invoices from the hospital, a letter from his physician explaining the illness and advice not to travel. If he can document why he overstayed, he might find leniency when applying for his next Non-Imm B.