Not disputing the valuation being too high, but Tesla has a pretty large technology lead with Model 3 over other competitors at the moment in pack architecture, BMS, high powered electronics, and huge leap in motor tech with their permanent magnet assisted SMR motor. The people tearing down the Model 3 are pretty much blown away by the high power electronics in both their capabilities and level integration to bring cost down.
The Taycan has faster charging, but that pretty much comes down to their choice of NMC chemistry vs Tesla's NCA (NCA is only feasible with cylindrical cells).BYD is the only company that can match or beat Tesla tech at the moment.
That could all change after a few years of R&D and several billion dollars, however.
I see Tesla where the iPhone was in 2007, huge tech lead over the competition, but some weird fails on the basics like lack of MMS or Video Recording. Porsche and Jaguar are the initial droids, promising competition but it will take them a few generations to really catch up.
The great thing about the Taycan and iPace is that it gives viable EVs for the anti-tesla fanboys to buy. Like Apple, the cultlike fanboyism around Tesla creates a group of anti-fanboys that hate the company. Its like the third law of motion, every Fanboy creates an equal and opposite hater.