That is one disadvantage of TBH, you can't extract the honey, you have to remove the comb and honey and press it to get the honey out. What a mess. The advantages of extracting is that once the bees draw out the foundation, it can be used year after year without the bees having to make new comb. Making comb is very nectar and time intensive.
Most TBH are around 30 frames long, and the comb area is larger than a Langstroth frame, so they can still get quite large. But once you remove the full frames they have to start from scratch building wax.
On my todo/wishlist is build a TBH that would take Langstroth honey supers on top. Thus way I could benefit from the TBH brood chamber and still get extractable honey. We'll see, maybe next year.