Maybe orchids aren't a beginner mantis for everyone.
This is sort of the point that I make all the time when people ask what is the best beginner reptile. IMO one of the most overlooked criteria for determining what is the "best" beginner pet is what do you want. Sticking with mantids, but the theory applies to just about anything, if the only mantid someone wants is an orchid mantis it may in fact be the best one for them. It sounds to me like they have some special requirements but that it is not that difficult to provide these requirements. If someone only wants an orchid mantis perhaps he/she will do what it takes to keep one where as if they settle for an "easier" mantis they may not care for it.
I'll apply this this to snakes as I have a better knowledge of them. Obviously certain species are out of the question for beginners (venomous, species that get extremely large, those that have very specific and difficult to provide requirements etc.) just like I am sure is the case for mantids. However, if someone really wants a Brazilian rainbow boa (a species not considered too difficult but generally not recommended for a beginner) and had no desire to keep any other species getting a corn snake may not be the best option if they do not want a corn snake. A pet they had to settle for because someone else said it was more suitable for a beginner may quickly become an unwanted and neglected pet.
If someone truly wants the best beginner mantid and does not have their heart set on a particular species them by all means recommend those that are generally the easiest to maintain. On the other hand, if their desire is to have something a little more difficult but still within reason I see no reason why that species can not be recommended.
I am in no way suggesting that an orchid mantis is suitable for a beginner. I have no idea of the specifics in care they need. Obviously I_love_mantids doesn't feel their needs are that difficult to meet or perhaps he (she? sorry I do not know) likes them to the point that the extra steps he needs to take to keep them isn't viewed as anything out of the ordinary. he is willing to do that for a species he loves. Extrememantid is looking at the care of this species as compared to the care of others and obviously feels that they need something above and beyond what he would consider easy. It may not be that he thinks they are particularly difficult but rather they just need something more.
I can see both sides of the issue. For the most part I have a tendency to ere on the side of caution. I will stick to recommending the bullet proof species (if there is such a thing) when no other criteria are given but I do recognize that just because a species is easy is no guarantee that a person will be able to keep it alive if it is not something he or she really wants.
Something I am heard saying quite often is "This species has some fairly specific needs. It is not difficult to meet these needs but it is essential. If you are willing and able to take the extra steps needed it can be a very hardy and long lived animal but if you are lax in your care they will not do well."
I say the same thing for fresh and saltwater aquariums. Many people will recommend a beginner start with freshwater to get the hang of it for a while but if the person does not want a freshwater tank I do not think that is such good advice.
Anyway, sorry to get off topic. To pinkpalominos, I can't recommend a mantis for you as I do not know that much about them. All I can say is that if you are not dead set on a particular species (which it sounds like you are not) then go with one of the easier ones. If you do have your heart set on a more advanced species however, and you can provide it with what it needs then by all means go for it.
We may be beginners but that does not mean we have to begin at the beginning.
Good luck.