They said up to 30 days but probably shorter. Still, it could be a long wait in the early days. Laos is better as long as you meet their minimum account seasoning requirements (3 months of funds parked in your account).
If it's slightly less than 3 months, but close enough to it, not sure. They might be OK with that but hard to say.
Porn and weed, not quite the same thing. Penalties for porn likely much higher than for weed in many jurisdictions. The opposite in others. Really depends.
Should be fine. Perhaps print out an updated balance on the day you apply or the day before and be prepared to show the balance again on your banking app or internet banking when you apply.
It's easy enough if you're living with your spouse/family or you own property. Simply supply proof of these.
For those who need to rent property, there are workarounds but the 6 month requirement is silly.
Again, there seems to be an assumption that everyone using this visa will live in Thailand full time even though this visa is technically a long stay tourist visa, not a residency visa.