Ignoring base camp and mission control is extremely arbitrary. Neil Armstrong walked on the moon alone, ignoring the people in the capsule.

A dog went into space alone before Gagarin did.

Alan Eustace went into space in a suit, while Gagarin was juat in a ship that went to space . if you fiddle with the rules, you can say many things are greater than each other.

It's nonsense. All achievements are achievements, you don't need to fight to argue that the Russians had the "best" achievement by inventing qualifiers.