The SNP aren't going to be wiped out.
Support for independence is fairly solid at just under 50%.
Support for the SNP, however, has been dented by the Sturgeon and Murrell scandals, the Mathieson iPad scandal and Yousaf being incompetent and blowing up his own government.
Additionally people are looking South and wanting to give the Tories a spanking, so jumping on the Labour bandwagon.
I expect Labour to gain a load of seats (25 is my guess), SNP to lose about as many, Tories to be left with a small handful. Lib Dems to hold their two seats in the far North, maybe gain one more, and Reform to hardly feature.