Currently, not all but the majority of crypto investors are on Trump's side and supporting him, he has received huge support from the crypto community. But that does not mean he will be elected because cryptocurrency is not a key factor in determining the election results, votes from cryptocurrency only help him increase his chances of winning, but do not guarantee victory for him.
If Trump is elected, there will certainly be changes in Congress, there will always be changes from the Senate, House of Representatives, and Congress every time a member of another party comes to power. So you are right in saying that it is still very early to say what will happen.
But what people are more concerned about is whether Trump will really keep his promises after being elected or will forget everything he promised after achieving his goals.

Whenever Trump's been taking crypto seriously or not, we can't deny that crypto is making history in politics. I'd say crypto is beginning to matter in America. Back then, crypto was nothing compared to what it is right now. Crypto voters could certainly make a difference in this year's election. While a lot of people still haven't heard about or used crypto before, times are changing at a very fast pace. The rising popularity of Bitcoin can't be ignored. Either the US government joins the game or gets left behind in the dust.
Imagine what would happen if Trump wins the White House and Republicans take control of both chambers of Congress (House + Senate). The crypto market would be going all the way to the moon (or Mars for that matter). I doubt Harris will make things better for crypto, especially when the Biden administration regulated it with an "iron fist". She is part of such administration (currently the sitting Vice President of the United States), anyways. Hopefully, Americans in support of crypto choose wisely before it's too late.
