Arguments of BTC maxi

Hi all,

I had a chat with a BTC maxi today. Amongst many things that I was able to quickly dismantle, he claims that Ethereum's smart contracts are a joke because of the difficulty bomb smart contract which was supposed to activate a long time ago, but has been delayed many times. Meaning, that someone was able to cancel/amend it. Thus, making Ethereum centralized bs.

I tried to find more about it to understand the mechanics of it and if something like that is actually possible. I thought the activation of it is still a debate between the core devs and is yet to be confirmed; I believe currently planned for June.

Could someone point me in the right direction or shortly explain the situation? Why would we even need the difficulty bomb now, if the PoS switch is around the corner and it will change everything?

Thanks :)