What are the consequences of overstaying a visa in Thailand, particularly in relation to a recent case of a 70-year-old Englishman?

In a recent discussion, a case was highlighted where a 70-year-old Englishman overstayed his visa by 187 days, generating reactions from the community about the implications of such an overstay. Observations noted that the maximum fine for overstaying is set at 20,000 baht, yet there are anecdotal accounts suggesting that fines may be reduced to between 3,000 and 5,000 baht if the individual is caught by authorities. The community expressed concern regarding factors like the elderly gentleman's understanding of immigration rules and the treatment of foreigners in Thailand, while also sparking debates on age-related forgetfulness.