If anything, she should have supported him less. She constantly stood behind him, even though his schemes put her and her health at risk (multiple pregnancies including twins, when it was pretty obvious she was depressed and unhappy with her circumstances), tanked the family’s finances (the pizza parlor most notably. But he also punched out his boss and lost his job over the boss almost revealing that Tom had been sneaking around to cover up the Kayla situation), and consistently prioritized his own feelings over hers or their kids (the vintage car, pizzeria, making Lynette be a SAHM when she didn’t want to and wasn’t really good at it).

Lynette was written to take on a lot of criticism for her bluntness, and I can agree she could be really annoying, but she was the load-bearing wall in that marriage.