So what is "tech" now, if we take the definition to be "new technology not yet widely adopted by everyone's grandmother"? Maybe some of the blockchain stuff? Nuclear fusion? Reinforcement learning based AI agents? Self-driving cars? Hyperloop? Homomorphic encryption? Nerve implants? Robots capable of moving in unpredictable environments (like Boston Dynamics has)? Artificial meat? Space ships?
I think I have heard Tesla to be described as a tech company, once or twice. And with Bosch, my favourite power tool company, the same. I mean I am not a english speaker, but it would be really news to me, that "tech company" is defined as "brand new tech".