The mindset is "It was OK when I did it 10 years ago, it's not OK for you to do it now you fricking SJS'er".
I still contend that there is a difference. When we did it (I only WISH it were ten years ago.) 15 years ago the barriers to entry were high. 2500 TT/ 500 ME was common for the "good" commuters. 1500 TT / 200 ME was common for the scumbag operators (including the one I worked for) who also tended to require a $10,000 "investment" in training. Those were minimums of course -- rarely competitive.
So how did one achieve a competitive resume in that environment? Flight instructing took you part of the way, but multi-engine instruction positions were few and far between. Those who were most competitive for the coveted commuter airline pilot positions were those who were flying freight, charter, corporate, etc.
So yes, I was new at one time as were we all. I had frightening encounters with thunderstorms, icing, winter weather... you name it. Much of the time I had those encounters alone and escaped by the virtue of luck or good fortune. It doesn't take long operating in that environment to build a library of war stories -- most that you would never share. The pilot's ego and fear of being caught prevented those stories from being told. But, nonetheless, with each story young aviators build a foundation of experience that - in time - will make them valuable members of the cockpit crew.
That is not to say that such experiences can't be obtained in the right seat of a CRJ. But you must admit that it's harder to do so. Operating as a first officer in a regional you are essentially a yippy dog tied firmly to your stake in the ground. The operation, by virtue of the fact that you sit next to a Captain whose certificate rides on whether or not you're capable of following SOP, is likely to protect you from the lion's share of stupid decisions. Better for safety? Undoubtedly... until the day that YOU are the PIC with precious little experience to draw from when the situation arises that requires you think outside the box.
So it's not that you're an SJSer. That's really not the problem. The problem is that you're an SJSer without the virtue of any measurable real-world decision-making experience. (Some of) you bark and yip like that little dog but there's just not enough chain for you to really do any damage.
Until the day that you are the PIC (with a much longer chain albeit still chained by the protections of part 121, ops specs, dispatchers, etc)... you are flying with a low time FO (much shorter chain)... and some situation occurs that wasn't covered in the textbooks at Embry Ridiculous.