So you honestly think soft fabric luggage is as secure as hard luggage? Any blade be it scissors, knife etc a quick slash and the whole side is ripped out of the sift luggage. This could be done whilst simply walking past. Everything falls out on the floor and in seconds it’s gone. I’ve seen kids in Africa undoing the straps on soft motorcycle luggage.
I personally have not had any bother at all where ever I’ve left the bike. I think I’ve only used a chain and lock once, usually just turn it off, steering lock and walk away. I have only been touring on bikes including small 125s since around 1983 though. So fairly new to it.
I guess you also think a fabric bike cover is as secure as a locked garage?