Positive Aspects: High transaction volume can show growing adoption and use of Bitcoin as a means of transferring value and conducting financial transactions. This is showing increased interest and utility in the cryptocurrency.
I highly doubt it counts as a positive when the mempool is being spammed with the transactions that is clogging it.
Increased interest will be indicated by an increase in regular day to day transactions being made on the network and not short busts or spike in unconfirmed transactions.
- Jay -