You missed what I said, but in defense of you I didn't say it real clear. What I meant by 'all the way up' was them aired up as high as they go. Airshocks put more and more load on other parts like the brackets or mounts depending on how high in pressure you run them. I saw people with broken mount parts that ran the shocks aired up all the way.
If only aired up the 1 1/2" you may well be all right. The 'undriveable' issue comes when you have them jacked high and then lowering them allows big tires to rub bad or similar. If just to look different and not raised high then no trouble at all possibly. Now, depending on what breaks, you wouldn't want to drive if a hanging piece of something can now get caught to damage further.
Bayonet, flat plate mount, no difference, part is strong enough to take load or it breaks.
Springs carry the car weight not shocks, until you use airshocks, they then load parts harder than designed for, no matter, often the parts still last using them. If worried you could always pull mounts and take to weld shop to have them beefed up, the weld is what usually gives way.
I note mention of words Maverick and no shocks made for Pinto, if you have bought shocks that simply have what appears to have the correct fittings on both ends, that could be a huge mistake. You need a properly designed shock for the car it's going on, meaning correct stroke and body length to prevent possibly hitting inside because the working length is not right for what you are using them for. Big problem since not as many airshock apps out there as used to be, people look and say 'this will work' and totally wrong there. Top or bottom out shock and can damage it first time you do it. In freaky situation could even cause a wreck.