The point of not trusting Google hardware is that there is no way to know what hidden function is in there. De-lidding and reversing isn't practical at current integration density. So, no, I don't trust the hardware to not contain remoteable backdoors. But it's a pretty high threat level.
I'm on it for a few weeks on my new Pixel 7 a. Looks painless, though I haven't migrated fully yet. Lineage OS on my old phone and tablet. Waiting for Pixel tablet sale to run GrapheneOS there too.
Electric batteries have a low energy density but overall higher efficiency than diesel. Fuel cells with liquid synfuels like methanol have similiar energy density (about half) and twice or more the efficiency of diesel.
Extraction limits are the only thing that will limit anthropogenic emissions, and soon. Unfortunately, Earth system own dynamics begins to dominate greenhouse emissions, so that's not going to change things.
Solar and wind are only relatively cheap if you don't need to buffer. Unfortunately, you do. And electricity production is only a fraction of primary energy use. Concrete, steel, glass, fertilizer, chemistry, diesel and bunker fuel for shipping and mining. Can't make new renewable infrastructure without fossil extraction.
Which "experts" do you need for what's common knowledge?