I first wrote this text as a brainstorm over on the Ultralight subreddit, hoping that it would be added to the information side bar or wiki section. But it didn't seem to pick up enough steam and it would have given the moderators there extra work when they are busy enough as it is. So I figured that since I put some work into it anyhow, why not post it here on my blog. Not everyone is on Reddit and some of my followers might find this useful, or better yet maybe someone new to UL that is Googling info on UL pros and cons might stumble upon this and find it helpful.
I will include some improvements and more solid info from some of the feedback I got from the UL forum. So thanks to anyone that gave constructive criticism that might be reading this! Unfortunately, I also got trolled by one rather mean spirited member of that forum, and won't be getting into all the absurd semantics that were thrown my way that were neither constructive nor helpful for someone trying to understand the basics of these UL issues.
What was lost on this troll is that this pro vs con list and discussion was/is intended for general points (as most pro vs con lists are), and should be helpful for those who are not as familiar with these UL debates. This was never intended to be an exhaustive meditation on each and every aspect of these issues and points. Yes, there is quite a bit of nuance for veterans to jump down the rabbit hole and get into. And yes things like UV radiation and its effect on fabric can be quite complicated. But that is a story for another time, not for an easy to read introduction to common UL pros vs cons when it comes to certain common gear choices.
Which brings me to my next point: this list is also for UL gear intended for use by UL or more lightweight backpackers. For example, there is no need to bring up say 70D fabric for a tarp when it comes to UL backpacking. The grand majority of UL backpackers and UL cottage gear manufactures stick to 7D to 40D when it comes to tarps and tent rain flies. That's not my opinion, that's just a fact that anyone can confirm by checking out the current state of affairs of UL tarps. Nor do I think bringing up heavier and more robust stoves meant for deep winter/cold backpacking is very useful here--one should start with 3 season before moving on to more advanced conditions, like say alpine trekking in Alaska in the winter.
Thus the point of this text is to cover some main points that are the most relevant and useful for someone that has little to no knowledge of UL backpacking. While it can be interesting for UL veterans to read as well, and maybe a few vets could learn a thing or two as well, again, this is mostly for noobs. So with all that being said, below is the final version of the text that was originally posted on Reddit. I will go through and edit it to make some improvements and such, and may do more updates on it in the future. Feel free to email me with constructive feedback and if I have time I'll be happy to get back to you.