I am sorry they have had some issues. I am, however, sure they will repair them. It will be somewhat of an inconvenience, but I have faith in Ruger. Obviously, many new products have bugs that have to be worked out.
It doesn't look to bad to me. They already have a fix, are trying to get the guns returned within a week, are paying shipping both ways and giving you a free spare magazine for your trouble. When I use a pistol with a manual safety, I keep it on safe until I go to point in at what I'm going to shoot. It looks like the only possible danger would be dropping the gun after taking it off of safe.
I bought an SR9 last year new. The recall had already taken care of it, and I liked the feel of it, but didn't like the striker fire part and never got the thing to fire a decent grouping so sold it. I like Rugers, mostly, but couldn't fall in love with the SR9. Had a lot of stovepipes, and failures to engage even with premium ammo.