Because they are not good enough
That is interesting. They should have made it in several divisions but they are not in and teams below them are hmmmm
The level they play at (Pee-wee, Bantam) if the championship of that level has the opportunity to make it to nationals then a NH team is not allowed to participate in EHF playdowns. Regardless if they play the season in the EHF, the EHF is a Mass. league and only MA teams can move on to nationals, regionals etc. This is why the Flames play in the GSL. There are no MA teams in GSL but if there were that rule would apply to them. A few years back TG was third in a particular age group but was not allowed to move on to playdowns so the seventh place team (top 6 go on to playdowns)go the spot. NH orgs are aware of this rule and accept this in exchange for playing in a higher far better league than that of GSL.
Good for them, but they should be disqualified from taking up a slot in Tier 1 Black.