"On a previous android phone"
They've been incrementally locking down those features and options (or security holes) over the years. I've used Tasker almost from the very first android phone to automate tasks and watched those features it tied into slowly get stripped away or locked down to the point of being useless.
Things often have various maintenance cycles that need to be maintained. Most tools require regular safety checks (usually performed by user right before use) that you probably don't want to depend on the public for. Batteries may need to be charged or changed. Oil changes and the maintenance of other consumable parts. Firmware updates. Licensing (and maintaining a record of licensing) for said firmware or software. Warranty timelines for repair or replacement. Maintenance that needs to be done after each use, every time interval, or only (or especially) if the thing sits unused.