WeTek images do not need aml_autoscript, but standard images need it. However, this only runs if you use the toothpick method:
The toothpick method only needs to be run once, but it is an important step because it sets a bunch of uboot variables, which are needed to boot LibreELEC from SD card or USB (and if it can't find them, it will boot from eMMC/NAND automatically). However, the aml_autoscript of LE8 and LE9 are not compatible with each other, so if LE8 was installed earlier, this may be the reason why LE9.2 does not start. But the toothpick method will solve this problem.
WeTek devices do this whole method differently: Power button -> whereToBootFrom uboot variable. This is one of the main reasons that WeTek images are really only for WeTek devices.