I have always appreciated Firefox mobile’s leniency towards exporting open tabs. This is in contrast to Chrome or UC Web.
However, upon large open tab sizes, “select all” for tabs does not work as intended. Once I try to export the tabs under “select all”, it crashes the app. I had several thousand tabs open.
To get around this, I made a bizarre solution using scrcpy: https://android.stackexchange.com/questions/265679/how-to-backup-large-amounts-of-open-tabs-in-firefox-android/265680#265680
The autoclicker is essentially automating the task seen in the video here. As seen in video, going down can be done without monitoring, but going up must be done with monitoring unless you want to lose your selection: https://youtu.be/CE1tZgdD2U8
The reason going downwards needs to be on the left side and upward on the right side, is due to observed phenomena. There is a diagonal shift that makes exporting tabs difficult: https://youtu.be/LSH8bOgKBz8