Well, I can see people have a few misconceptions about BB and TB.
I rarely get any lag in my matches. I would say about 95% of the matches I play are lagless.
As for Taunt Partiers, they overrun BB. (They've infected TB to some degree as well). However, the only good players on either are crashers, pacifists, or hackers. Noobs can be any of the three as well. Most good players are pacifists, and most will willingly team up with you to scare the noobs away so you can have a decent match.
Taunt Parties are just LOL. If you just pick Falco and IAP through them\troll them with wavebounced SHDLs\circle camp Temple they're cake. Or, go MK and troll with rising Dairs-›Nado. They're easily read and really a non-issue.
But why does one WANT to play *** mode against a mass of largely ignorant elementary schoolers? Well, for one, it teaches you to play creatively and learn to take opportunies. Wifi can put you in some strange, and often completely ******** situations. You never know when a strange little chance will present itself. Like the other day, I had a -1 from being hit by a random Bob-omb. I saw a clear opportunity in a Bowser spamming Side-B, trying to get an easy KO by taking people over the edge with him. I drew a nade, and waited a second. I walked over by him, and when he had me in the air, the nade exploded, freeing me from his grip and allowing me an easy Fair spike.
The true reason I play Wifi is because you see many different playstyles, combos, and strategies (against the occasional skilled player). It is often a learning experience even for the players who know what they're doing.
I hope this better defines my stance on With Anyone Wifi.