MicrosoftBitcoin isn't perfect. decentralisation and security are probabilistic so we will never reach 100%
Nothing comes closer to 100% then bitcoin though. Your arguments have been debunked many times but they seem to keep popping back up whenever a bull market attracts new people (and scammers looking to profit of them via altcoins). https://jimmysong.medium.com/debunking-the-empty-block-attack-10513858b3f8?postPublishedType=initial
Now for ethereum, all you have to do is look at the weakest link: the full archival node!
There are ca. 4 left. Infura is the most important full archival node operator. When they went down, ethereum went down.
https://cryptobriefing.com/infura-outage-sparks-debate-over-ethereums-decentralization/
It turns out that inflating blocks with massive amounts of data creates irreversible centralisation. Bitcoin developers were ridiculed when they fought to keep the blocks small. Ethereum now proves that they were right.
Bitcoin mining is getting more decentralised so it is being solved. Ethereum's problems look far less likely to be solved.
