It's frustrating seeing Block 2 go through pain we thought we were past, but we're talking about flights this year January, March, and May. The last Block 1 flights were on the cusp of success, so we know if the tiles can get a bit more robust then the mission design works. We've seen Super Heavy do a successful booster catch. We've seen Starship do an orbital reentry all the way down to a soft landing.
Execution matters and this last half a year hasn't been it, but the evidence seems to me to show the theory can work, and that SpaceX isn't running out of capital or conviction.