You realize that if you get a CEL they will know and initiate making an appointment with you? When I had a Veloster Turbo that car came with a free year of whatever Hyundai calls it and they do the same thing. They thought I was crazy canceling a year's worth of free service. Tuning was more important to me.For what it's worth, it's also not like VW didn't know about or prepare for the sunset of 3G data services. The 3G sunset impacts 2014-2019 model year cars. You can no longer get a subscription for these vehicles and if you have a subscription that goes beyond the sunset date you get a prorated refund.
Model year 2020 and later cars with the option have what VW is calling Car Net next generation, which is not impacted by the 3G service sunset so we can assume they have 4G/LTE capable radios. It includes app-enabled features. I assume there is new stuff in addition to whatever old Car Net offered. Lots of people don't like their car being connected to anything, but a lot of people like the features as well and are willing to pay for them.
I have never used old CarNet and don't have a 2020+ vehicle to try the new hotness but if the app sucks they need to fix that since they are taking folks money for the advanced feature plans. If I had a 2020+ vehicle I would give the free services a shot... https://carnet.vw.com/#/plan-pricing/modelyr-2020. And I can see the appeal of adding a 4G/LTE hotspot to your car, depending on the data allowance.