Bitcoin's energy usage isn't determined by the transaction count but by its valuation. Raising the limit of transactions on the Bitcoin network wouldn't affect the energy consumption (but it would have other trade-offs).
Aren't there significant technological obstacles to raising the transaction limit, not to mention the fact that large miners have actively obstructed attempts to raise it in the past? My understanding is that we only finally got a block size increase with segwit in 2017 and that only happened after people worked around miner sabotage.
There are no technological obstacles per se, but it will increase the rate which the size of the blockchain grows.
It's true miners have obstructed attempts to make these kind of changes but they don't control the price of Bitcoin. If market demand for a higher transaction rate becomes great enough and they don't adapt, then another coin with bigger blocks will simply outcompete Bitcoin.
