Depends on what you call a "consumer-level application". Many consumers do photo/image, video processing and those benefit from MT. Same goes for machine-learning (which is now part of many apps). Besides, every time the user runs more than one app simultaneously (say, web browser, music player and something else) MT is used. On the other hand, most consumer apps (calculator, notes, power-point, simple spreadsheets etc.) just don't need high performance. Yes, technically they all benefit from higher ST performance - as in, say, calc operation takes a few microseconds less which nobody will notice.