That’s the opposite of fascist.
You have a risk of ending up with one or more people in congress who owns favors to the other branch of government. Or who are afraid of having a harder time defending their seat if they criticize the wrong person. And that people shrug this off as "well, that's how politics works" is really dangerous.
The Enabling Act removed the power of the legislature. This is the exact opposite - the legislature still has power.
The President has always been able to veto laws. Biden could have vetoed the bill if he wanted.
And a Congress that passes a bill that says the President has a say in it's execution isn't odd either. The administrative body always has powers of execution.
And Congress is free to pass a law to reverse the law and make Tiktok legal if they want.
The parallels to Mussolini are not nonexistent.