The method they’re trying to use to make them incompatible is a last gasp at keeping control of their market. That got discussed in this thread. Basically, they’re applying an ink marker on the new pods, and the new coffee makers won’t accept a Pod without that ink marker. Their DRM is a specific ink color, and it really isn’t a protectable tech.
Some people had already bought the new 2.0 makers, and bought existing pods without the ink mark not knowing why it wouldn’t work. That got the company extra bad publicity - exactly what they didn’t need when sales were already dropping. Those in the know, didn’t buy - Keurig’s sales have since plummeted.