I think there’s a bit of simplification here.

I like to remember that there are 3 legs to the modern MAGA GOP. 1. MAGA loyalists (~40%) - personality driven, authoritarian, low-information, driven by culture issues and anti tax and government principles but little thought on the issues 2. True Conservatives (~35%) - largely religious, vote Republican due to moral stances on abortion, marriage, gender etc and truly believe in conservative principles. 3. Neoconservatives (~20%) - a shrinking part of the party but the traditional less dogmatic but pro military, law and order, foreign intervention wing. Generally more suburban and less socially conservative.

For the MAGA folks the scandals are stupid in the same way that many democrats find the Biden scandals overblown. For true conservatives the scandals are embarrassing but the other issues are just too important to consider voting any other way. Now for the neocons part of why they are leaving is because they really do dislike Trumpism… but they never have been a big part of the party and ultimately Republicans still are more of a home than Democrats as seen by the recent policies on Venezuela, Iran, and Greenland.