oh yes for sure; more than it is now. But it’s already getting less than half the amount of radiation / solar winds force than Earth is. BUT this is is still a non issue; if you can increase mars atmosphere to 3x Earths atmosphere for the same pressure than the loss rate even if it’s 30x what Earth loses is going to be a non issue. You already creating trillions of times of atmosphere than what you’re losing. So after atmo creation you just exude some 1/trillionth of the amount of atmo you already just created. SO ANY useful amount of atmosphere creation makes the magnetic shield a non issue of the goal is humans breathing.

Earth loses 90 tones a year. So if Mars loses 900 tones it’s still going to be a non issue because Earths atmo is like 5.5 quadrillion tones. And if you want 1 bar on earth you’ll need 3x that. And you want to worry about a 100 tones a year after we just made 16.5 quadrillion tones?

Hell if Mars loses 8100 tones a year it’ll be a nonissue.