I'm being a bit provocative here. But, in my Drupal days this question came up from time to time. I've build some sites that use a LOT of contributed modules (70+ maybe more). I once asked a more experienced friend if I had to many modules installed. He looked at my site and said I was probably fine, but one more module might be too many. ;-)
I know that experienced coders with the ability to write custom code are sometimes critical of sites with lots of modules. I'm wondering how folks feel in the Backdrop space. Do you have any sites with too many modules? If so, what is the magic number?
NOTE: I'm reasonably sure that no one is going to provide an actual number, because there are lots of factors and different modules have a different impact on the site performance. So, I suppose the real questions are:
1) Is this something that even concerns you?
2) What factors/criteria would make you think that a site might have too many modules?