In all seriousness, if it's a topic worth digging up and someone has actually read over the topic in it's entirety and has questions, it's not a big deal.
If it's a 5 year old topic on "What lift should I buy" I will find you, beat you with a rubber chicken, pour Tabasco sauce in your eyes and give you a wedgie.
If the reviving reply is something along the lines of "I didn't take the time to read over all 300 pages of this thread, what do you guys think about XY & Z?" and , Y, and Z happen to be on page 5 of that thread and discussed ad nauseam, I don't know...like Condition 1 vs. Condition 3 ...see above regarding Tabasco sauce.
There is no "Forum standard" for reviving dead threads. Generally across the internet it's considered a no no when nothing new is added, like replying cool to an 8 year old thread.
The issue is when topics that have been hashed over time and time again get revived, here's a brief list of what would not pass muster as being a new thread due to vast content that all ready exists on the forum should one have the decency to exercise some initiative and LOOK for an answer rather then needing to be spoon-fed the same content that has all ready been discussed 20 times a year.
Which lift should I get?
What do you think I should do?
What tire should I get?
Whats the maximum tire size I can run?
I am going to do XZY, what do you guys think?
Will these springs work?
Like there's some new bit of information that is going to change the game regarding any of those topics. There's not.
Now of course, I'm being overly dramatic.., but the answers are out there. It always amazes me that people can use Google to find a forum, successfully sign up and complete registration on this forum, including the verification email, post a thread (bonus points for putting it in the right sub-forum) but can't type "
maximum tire size without modification on trailblazer" in Google in the first place.
I rest my case.

Once lifted 03 Trailblazer on 35's, gave it up to travel the USA with my family.