I'm unclear how Tari will help Monero's price.
Did someone say it would? The price action in the market after the announcement suggests little if any connection.
Monero will need to definitively put to rest the perception -- whether accurate or not -- that Monero may have a bloat problem, in terms of blockchain size and/or memory usage. This perception has dogged Monero from the beginning and it does Monero no favors.
Perception is one thing, and can't be fully addressed by facts, but Monero has literally among the
lowest memory usage of any coin. You can run a node in 50 MB or something, maybe even less.