Stolen election was the entire GOP platform. If you weren't a hardcore stolen election conspiracy theorist, then you weren't getting nominated in 2022. Liz Cheney, who is a "perfect" conservative according to her voting record, didn't get nominated because she opposed what had become the GOP platform. Additionally, Russia unequivocally interfered in the 2016 elections. Trump has yet to produce a shred of evidence to support his claims. Attorney's have been sanctioned for bringing Trump's "stolen election" cases to court. Don't forget Jan 6th. Election officials have actually gone into hiding for fear of their lives, many others have quit their positions. Trump was calling election officials asking them to find votes. Trump tried to get Pence to overturn the electoral college, they were trying to have alternative electors, etc. You're comparing hyperbole and a talking point from the DNC to a man who literally did try to steal the election and then turned "stolen election" into the GOP platform.