What are Porsche if not a premium brand?

I'll be up front in that I've never sat in either for more than in a showroom, but tell me the Taycan is not premium and the Tesla is. I have never heard of fit and finish issues like I hear Tesla customers complaining about, for example.

I think premium brands aren’t about the materials as much as they are about signaling brand values. A Porsche draws on foreign luxury ideas for playing a rich man, but a Tesla is for role-playing iron man with fancy new tech. The taycan is not appealing to people who want a car of the future in the way the model s is. This value is intrinsic to the Tesla brand and the utility those customers get (over the costs of maintaining that brand halo) can be captured as margin for a long time to come.

Porsche is doing good, they plan to sell over 40,000 BEVs this year and 60-80,000 cars next year. Their growth rate looks good but that is still a far cry from what Tesla already sells and plans to sell next year.

Agreed. Tesla is so far in front tech-wise and continuing to push.

They were only talking about 4680 and structural battery packs a year ago and it’s about to go into mass production.

Aren't most Teslas basically using Panasonic manufactured batteries?

Panasonic batteries made to Tesla's specs not the general market.

Doesn't that mean that the manufacturing process is more or less a standard one? and that Panasonic has the same battery tech now?

And who gets priority in their production plans?

I'm guessing Panasonic will prefer having more then a single costumer but regardless - that's quite a different narrative then "Tesla has a 5 year lead in battery tech".