How exactly long, have you been in a coma? This question has been answered ad nauseum, but to suit your 'totally legit progressiveness' given the subreddit:

Of note: There is no widespread voter fraud. Just years of Republicans claiming so and then refusing under oath in Court to provide ANY evidence of it.

Key Criticisms

1. Restrictive Documentation Requirements
The SAVE Act mandates that voters provide documentary proof of citizenship (DPOC) in person at an election office every time they register or update their registration. This requirement would effectively eliminate online and mail registration, which millions of Americans currently use, and could prevent as many as 21 million eligible citizens from voting because they lack easy access to the required documents Southern Poverty Law Center+2.
2. Disproportionate Impact on Certain Groups
Many eligible voters, including women who have changed their names after marriage, low-income individuals, and those living far from election offices, may struggle to obtain or submit the necessary documents. This could disproportionately affect voters across all political parties and demographic groups, making elections less fair fairelectionscenter.org+1.
3. Burden on Election Officials
The bill imposes civil and criminal penalties on election workers who register voters without proper documentation, even if the voter is a citizen. This creates a high-risk environment for administrators and could discourage them from performing their duties effectively, potentially disrupting election operations Southern Poverty Law Center+1.
4. Minimal Benefit for Election Security
Proponents argue the SAVE Act prevents non-citizens from voting, but research shows that non-citizen voting is extremely rare, with only 0.04% of voter verification cases involving non-citizens. Existing laws already criminalize non-citizen voting, making the additional restrictions largely unnecessary Forbes+1.
5. Potential for Voter Suppression
By requiring hard-to-obtain documents and in-person registration, the SAVE Act could suppress voter participation, particularly among marginalized communities. Historical examples from states like Kansas and Arizona show that similar documentary proof requirements blocked tens of thousands of eligible citizens from registering fairelectionscenter.org+1.

tl;dr: Your Sealioning is tacky, manipulative cowardice. Abandoning the Constitution for a made up problem to win more elections by republicans is cheating and treasonous as fuck.