Any deck wants tempo, and if you're in a situation where an 8/8 gives you the tempo you want, then you use it. Burning your deck is *so* rarely relevant.
Tickatus is actually a really solid inclusion in most deck-burning Warlock decks because they're so tempo heavy.
Tempo heavy deck-burning Warlock? Where? I wanna see it.
All of them are.
Barrens Scavenger and Blood Shard Bristleback are both tempo cards. So is Neeru. Even Jaraxxus wins through tempo and board presence, not value.
They're midrange decks which typically win by big swing turns/tempo plays.