Direct thread use is usually, but not always reserved for prcision rifles where POI shift minimizing is a must, for firearms where the suppressor will be dedicated long term use, or
sole firearm use. So if you plan on parking the suppressor on a weapon and leaving it there for long periods or are primarily concerned with accuracy, go with a direct thread on mount, otherwise
look into QD attachments.
Even if I intended to set and forget, I wouldn't use rockset or Loc-tite on it if there is any possiblity that you want to remove it for cleaning, transportation, use on another firearm, or service.
The only time I would perm. attach (using blind pin and weld) is for the reason mentioned above, to make it a permanent part of the barrel, to get it to 16" barrel length for legal reasons
and even then, only with specific types and models of suppressors.
What would your application be, maybe we can help you narrow your selection or options down.