What are the implications of a landlord not completing a TM30 report for an expat living in Thailand?

An expat has raised concerns about their new landlord's failure to complete a TM30 report, which is required for foreigners residing in Thailand. The comments suggest that the expat can self-file a TM30 report using their lease agreement, especially if they are in Bangkok. The potential implications include legal issues for the landlord and possible complications for the expat's residency status.