The Mets have classed their plan / season tickets holders based on various metrics. If you spend more, have a bigger plan, attend more (in lieu of selling), you get "upgraded" and are eligible for more stuff / perks...
The internet and the data being collected by various resale sites has ensured that teams make the most out of their product. They can make money of their tickets. They don't want others making money on their tickets, and price accordingly.
If you think that electronic ticketing being adopted by pretty much every local was to save people from COVID-19, I have a bridge to sell you...