Thanks. Beech is kind of mid-hardness....but I have not worked with it much ....it isn't something we see much of in the Northwest.
http://www.woodfloorsonline.com/techtalk/hardns.html
It ranks between red oak and white oak on the attached scale ..but its very workable ...its not unusally hard .../ its way softer than hard maple ( which can be difficult to rout without burning )...
Sharp tools ...and running a router or shaper at the right speed ...and controlling the feed rate ...means you shouldn't have a problem working Beech ( or any Oak or Maple for that matter).
I haven't burnt up a router ..at least a good router ...in over 30 yrs ...on any kind of hardwood...( not even hard maple, purpleheart, etc...) ...and some of my routers have a lot of hours on them....( maybe the craftsman told her that to justify the cost ...??) ...just saying...don't know about the claim...but not surprised it was a good looking stock.