Actually, yes. No Nobel Prize worthy breakthroughs required, 1.5 to 2C is achievable through rapid adoption of existing renewable technologies. It will require both some political effort (ending fossil fuel subsidies, moderate carbon taxes), but the astounding price drops in renewables over the past ten years makes this quite reasonable.

Furthermore, you can expect some greatly expanded political will to put the earth on a more sustainable path with less severe global warming as people are more directly affected by the negative impacts of climate change. Do you really think Australian politics will be business as usual following this fire season?

https://about.bnef.com/new-energy-outlook/

You're like the CEO of Nokia in 2004 saying: "these smartphones are only a tiny portion of the market, no need for us to make huge changes to our core business!" while making the cognitive error of failing to understand the implications of exponential growth (renewables for terrestrial power).

Please try to enunciate a vision for the world in 2100 that doesn't suffer from catastrophic global warming. In that scenario, yep, aviation matters greatly.