My boy does it sometimes. I'm not worried since he isn't doing it all the time.
My oldest is 2.5 and she still occasionally potters about the house on tip toes. It's very normal. I think I remember HV saying they're only concerned if they only walk on tip toes. It's also a 'tiktok autism' sign but in isolation it's not a sign of anything to worry about.
My daughter will walk on tip toes sometimes