The proposal is a complete non-starter. Neither the author nor his supporters have provided convincing reasons why a 20-30% reward reduction to miners should put Ethereum at risk. Bitcoin’s block reward effectively halves every four years. Ethereum itself has reduced the block reward twice before, by 60% and 33% respectively.
The inflation reduction is clearly beloved by both current and prospective investors. E.g. this article on Bloomberg was the most-read on the entire site, clicked over 300k times on the first day. Increasing the inflation rate would destroy ETH’s blossoming SoV narrative and ultimately leave everyone, including miners, worse off.