While I fully understand the sentiment, I think reducing inflation without finding alternate mode of revenue for validators is not sustainable. It will eventually lead to a less secure network which could get exploited, that in turn will end up damaging to the token’s value more than inflation does. Without a sustainable revenue, inflation becomes a necessary evil.
In my opinion, the primary goal should be to create demand for the token rather than reducing its supply. A few months ago, I wrote a post about one way to do that here https://forum.polygon.technology/t/improving-dao-grant-sustainability-through-revenue-based-buyback/21044
May be I should propose it as a PIP to get the community feedback.