You should look at your cites: Electoral votes may be discarded lawfully if they are not found to be "regular", as specified in 3 U.S. Code § 15: "and no electoral vote or votes from any State which shall have been regularly given by electors whose appointment has been lawfully certified to according to section 6 of this title from which but one return has been received shall be rejected, but the two Houses concurrently may reject the vote or votes when they agree that such vote or votes have not been so regularly given by electors whose appointment has been so certified."

Not only does chapter 90, section 4 of the original act you cited provide an explicit procedure for raising objections to submitted electoral votes by state, conducting debate, and a vote, but the congressional record you cite shows the Senators and Representatives following the procedure outlined in the original act as incorporated in 3 U.S. Code § 15.

Hardly an unlawful attack on democracy. Lawful objections were raised, lawful debate was held, and a lawful vote was taken.

You originally asserted >> "The real threat to democracy is allowing leaders to stop following the democratic process. For example, on 02021-01-06, 147 congresspeople voted to throw out the votes from an entire state, even after their party had pursued the appropriate legal remedies [ https://govtrackus.s3.amazonaws.com/legislink/pdf/stat/24/ST... ]. Next time, they may succeed in throwing out votes. At that point, USA will be an oligarchy. This is the real threat to democracy."

Like it or not, the Senators and Representatives followed the lawful process. It was not exhausted until the objections were defeated. Asserting there was something "undemocratic" about the objections or the potential of throwing the out the electoral votes is irrelevant, it is not unconstitutional or illegal.

The objective of the process is to end up with someone holding the office of President. If it is true, however, that the election was fraudulent, and that fraud involved disenfranchising the democratic vote for the slate of electors, that would be a threat to democracy, especially if Congress refused to acknowledge it. The courts want no part of it because it's the responsibility of the State Legislatures and Congress.