Not a 'Trumpster', so fail there. It most certainly isn't 'nonsense'.
It most certainly is a fabrication. The entire Georgia election law fall out is based on the fabrication that it is like a 'Jim Crow law on steroids'. A blatant misrepresentation of the facts. This blatant misrepresentation of the facts dutifully parroted by the 'news' (political propaganda) media, hence your beliefs on this.
The left leaning Washington Post is pretty clear on Biden's assertions.
Mar 30, 2021 — The Washington Post fact-checking outfit awarded Biden its worst rating for his claim that a new Georgia election-security law “ends voting ...
A reduction in the number of hours available for is not what the Georgia law forces or causes. That law increases the total number of hours available for voting.
Read the text of the law for yourself:
83 (5) The broad discretion allowed to local officials for advance voting dates and hours led
84 to significant variations across the state in total number of hours of advance voting,
85 depending on the county. More than 100 counties have never offered voting on Sunday
86 and many counties offered only a single day of weekend voting. Requiring two Saturday
87 voting days and two optional Sunday voting days will dramatically increase the total voting
88 hours for voters across the State of Georgia, and all electors in Georgia will have access
89 to multiple opportunities to vote in person on the weekend for the first time;
Don't care if you believe me or not. Believe what the text of the law states (and also notice those who have misled you on this).