It's really a debate between accuracy vs. fluency. Glossika users are adamant about keeping the flow during the session, and doing recording playback disrupts this learning flow. It also makes it hard for you to get through a whole session in the given time. It's better to give each sentence your best shot and do lots of different sentences rather than trying to make one sentence as perfect as possible. With this, you're building a range of feel and accuracy in the language.
Language is about a range of expression, and learners want to feel they're making progress with this range as this builds more confidence and satisfaction.