Centrists don't sit in the middle of every issue or make an exact 50/50 compromise on everything.
I seriously don't understand how fucking difficult this is to understand. It's why I largely ignore political discussions on Reddit/Lemmy/all social media.
I don't look at one person saying "Murdering 5 year olds is bad", look at another person saying "Murdering 5 year olds is good!" and try to find a way where both are right.
And you missed the entire point. Centrism isn't about trying to find a perfect middle ground to every individual subject.
Of course there will be centrists that support Israel carpet bombing everything. There are other centrists that don't support them. There are some that will support them with conditions. I know someone who is broadly centrist who thinks Israel should be dissolved entirely.
It's not a fucking hivemind.