Come on man, it's easy to figure out why. Yes, they (Thai government) get a little extra out of these types for a visa, but it's chunk change and doesn't matter to most people doing this MO, unless you are going all "Cheap Charlie" over a few thousand baht... and if so, should just go away from Thailand. They changed it so that the morons won't abuse it but those that are genuine "snow birds" that come once a year for a few months, who can easily afford it, just pay a little extra and they can easily plan in advance and stay 90 days if they want. It's not an issue for these types that come for 2-3 months a year... piece of cake to sort it out, as they have plenty of time/money to organise themselves for their couple of months here. Surprised you couldn't figure that out... unless, of course, you are having a good old troll, which is fair enough, I guess.