Yeah, these cars are garbage.
While I feel your pain, I too take exception to labeling our beloved smart ED as "garbage."
Electric Vehicles are a brave new world and those who choose to embrace it are part of the "Beta Testing" pioneers. ED is no different than other purpose built electric appliances or Electric Vehicles. You look at the specs and cost to determine which one might be a good fit for you.
You can't do a compression test nor many other things common to buying a pre-owned ICE vehicle when evaluating an ED. This is made more difficult as many are off-lease vehicles that have been bought (on the cheap) at auction by folks who know nothing about EV and even less about ED. As they are a niche vehicle, few buyers know all the nuisances that may come with EV ownership. NOTE: smart is not alone in the BRICKING failure - other EV's are prone to similar failures.
With an ICE, you can replace a failed engine but with an EV those repairs can be near impossible. This can render a BRICKED EV a very expensive paperweight!
The percentage of failure (noted on SCoA) to the total ED population appears to be small (not unlike the percentage of ICE with blown engines/transmissions?) as our Community is only a piece of a much larger pie. Most failures to include at least one other "quarantine lock-down" related BRICK are brought to the forum AFTER the damage has been done.
None of us knew the "risk" when we bought our first ED. Our MY15 ED had a major malfunction that took it down for several weeks and required parts from Europe - fortunately, the HV was not harmed but the 12V also required replacement.
We own THREE smarts none of which are "garbage." Which one gets driven most, our climate controlled go cart SPARKY!
Hopefully your continued pursuit of a Class Action suit will provide you with some monetary relief . . .