Do I need to provide TM30 proof for 90-day reports in Samui?

Thomas Mitselis posted about TM30 reporting in Samui, it’s my experience (and others) that Samui immigration in Maenam are only asking for for proof of TM30 when you apply for a new extension. I’ve never been asked for proof whilst doing 90 day reports or had to notify them when I’ve checked into a hotel in another province, they’re not bothered - at the moment.