Yes. They need 1 to land - more than one means too much thrust.

Last time they only lit one, it failed to light, and boom. This time they lit all three hoping at least one would work, then turned off the ones they didn’t need.

I assume they had the idea independently of the guy who asked musk why they didn’t light more than one and shut down — musk replied “because we’re dumb”, but I guess that tweeter could claim to be a rocket scientist now.