We put things in the analyses because they were good enough to be viable, not because they were the best options available.
- Whirlwind Aerodactyl was always horrible on all but the most gimmicky teams(and isn't even on the analysis anymore)
- Taunt DDtar is probably the least effective usable Tar set right now against non-BP teams outside of sets that are intentional metagame counters for metagames that no longer exist like Boah
- Perish Song Celebi is pretty gimmicky, since it's really only effective for last pokemon Cursers, with Umbreon support, or specifically to use as a BP counter. Which isn't even all that effective of a BP counter, since Mr. Mime dispels it when he switches in, so he has to be killed before it does anything of value most of the time.
- Using "multiple phazers" isn't exactly super common anyway, I can't recall a time it was "standard" for people to use > 2 at any point in Advance, and 1 was always definitely the most common.
Pokemon are capable of doing a lot of things, but a team of Pokemon who happen to have gimmicky sets in their analyses that all counter BP doesn't make a standard team, it makes a counter team. I would wager teams containing many of these Pokemon aren't doing very well against non-BP teams, which are still a majority of the teams on the ladder.
And on the post by Yondie, seriously, you have to be fucking kidding me. Play more BP teams if you think Roar is consistently a viable solution to BP. Your post really makes me question how many games you've played against competent BP users, or on the flipside, how well you've done against non-BP teams with whatever you might be using.
EDIT: To be a little more thorough on Taunt, it's really only helpful at all against BP teams when used on Pokemon who have stat-up moves themselves, which is relegated pretty much to the Dragon Dancing version of TTar and Gyarados. The former has to sacrifice a move that is much better against non-BP teams, and the latter is frankly not a very good Pokemon in Advance with the coverage you get (HP Rock + EQ is ok coverage with sketchy power, HP Fly + EQ is better power(but iffy...) with worse coverage, can't touch any physical wall that doesn't rely on phazing it either way and the HP Flying version is destroyed by the everpresen
Related notes: BP teams' Vaporeons normally have Surf which makes it a lot harder for DDtar to set up. I realize there is a specific team on the ladder right now where this is not the case.