My impression (and I've been hosting sites at Dreamhost since 1998) is that Dreamhost support is like almost any other support operation in that there are always some support technicians that are more knowledgeable than others.
Sure the "easy" problems will get fixed more quickly than those that are "more difficult", and when you have on of the "difficult" problems, it is frustrating to have it take multiple attempts to get your problem fixed.
I've found one of the secrets to getting things resolved in a timely manner, with as little "back-and-forth" as possible is to clearly state the problem. You sentence above, as an example, is confusing to me (and I used to host many FP (argughh!) sites on Dreamhost) because "loaded" is an ambiguous term the way you are using it. You say the "site is on a front-page enabled server" (which to me means the FP extensions are physically present on the server, and the server is properly configured for them), so I have no idea what you mean when you say the extensions are not being "loaded".
I find it is helpful to simply describe the symptoms rather than to presume you know what the problem is (even if you do know) - you use of the term "loaded" might be causing the technician, who might be only passingly familiar with FrontPage (cause it is rarely used anymore on Dreamhost) to just check to see that the extensions are "loaded" on the server - he finds the are, and figured your problem is solved, or is with you. If the problem is that you cannot connect and publish with FrontPage to your Dreamhost space, that is what I would say.
I suspect it is also true that, since DH is a Debian linux based hosting service, every one on the support desk may not be familiar with the nuances of FrontPage; possible asking specifically that your ticket be escalated to the attention of one of the FrontPage "gurus" might help.
Fortunately, since you have already received a reply (even if it wasn't sufficiently helpful) you can respond via email to their email and not loose continuity on you issue (as opposed to having to generate a new ticket). Of course, you could try the callback feature; it seems that would necessitate DH finding a FrontPage savvy tech to return your call.
Hopefully, they will be able to get you sorted soon; they have been, on the whole, very knowledgeable and helpful when I have needed support.