As in the other comments here, I use Obsidian but avoid making it tightly coupled with my workflows. I like the fact that I can walk away when needed.
I used reminders a lot earlier, but I have stopped using them these days. I continue to use Calendars and Notes. Between the two, the need for reminders has gone from my workflow. If I need reminding and have a date/time, it is calendared. If I need a Checklist (Shopping), it is in a Note or part of a Note (e.g., Shared Shopping List with your partner).
I used reminders a lot earlier, but I have stopped using them these days. I continue to use Calendars and Notes. Between the two, the need for reminders has gone from my workflow. If I need reminding and have a date/time, it is calendared. If I need a Checklist (Shopping), it is in a Note or part of a Note (e.g., Shared Shopping List with your partner).