He is no more powerful than any other president. He has been using his power more than others - and demonstrating why most don't use it (well some of the reasons, there are a lot of other reasons not to use power).
However time is marching forward and as always happens other politicians are catching on - the house will be in full campaign mode in less than a year (except a few who retire - and the scary possibility that some have already lost a primary). 1/3 the senate is in the same situation. The 2026 election season is (as always) scaring a lot of politicians and in turn they will be trying to figure out what to do about it.
I can't tell you what will be done about it. Each politicians will make their own decision behind closed doors. Each will be re-evaluating their decision as every poll and constitute letter comes in (not to mention other indicators like the economy). As a result he will be losing power as congress starts to worry about the effect of his actions.
I'd argue post 9/11 Bush was the most powerful president. There was nothing that man wasn't allowed to do during that time. If Trump was president during that time.... Not something I want to think about.
Hes the most powerful President America has seen in living memmory.