My dad used Blazer vanes out of his Browning Timberwolf.
Arrows were Easton ST Excel though.
The "pencil thin" stuff you're referring too is micro-diameter carbon. More focused kinetic energy (?) or something like that according to Easton and Beeman boxes that I use the arrows of. There's also the wind-drag logic where the smaller something is, the less effect wind will have on it...even in archery there is now a craze to shoot western game at obscene distances (to me anyway).
I've always used 2" vanes. Then again, the oldest bow I've shot is a 2005 model, single cam Bear. On the old RedHead Carbon something series (before the Blackout arrows) I shot 4560s (low poundage spine) and had blazers on them and they worked very good. In Carbon Express Thunderstorm 30-50s I had a similar vane also at 2" at it shot well. These were both "standard diameter" carbon shafts. On youth Beeman ICS hunter arrows, I had 3" vanes. Then I switched to Easton Bloodlines, then/now Beeman MFX Carbon and Easton Axis. All of those wore/wear Blazer vanes, but are the "pencil thin" shafts.
I think they should work on the normal carbon shafts as well, at least from my experience.