I think that in some cases it is as you imply ... that a person may feel "entry level" means cheaper, less quality, or inferior. In many cases an entry level firearm may be a solid machine with only the necessities to perform a good job in the field.

I would consider that a perfect entry level firearm for a new hunter of ANY age would be a used gun from a decent manufacturer in good condition and sporting a decent scope but in a light kicking round. And, of course it must fit the shooter's frame and form so that it is comfortable to shoot. A used .243 in a vanilla model 110 Savage would fit the bill, as would many other guns.

In other cases I think those that may shun the term "entry level" are just being snobbish.