[manarth]

  is being a generalist considered a bad thing?

I would argue that having a general knowledge of the related fields is a very positive thing. That said, if the knowledge is at a fairly basic level, it'd be hard to find much more than a junior role. Senior roles generally require more advanced knowledge/understanding, and that's a lot easier to achieve by focusing on one specific skill/niche.

Most senior people I've worked with are the archetype T-shape: a good general knowledge of a number of related fields, and a deep speciality in one area.

Wikipedia has an interesting (although uncited) comparison of Versatilist (T-shape) vs Generalist [1]:

  Think of a person having some level of knowledge/experience in 15 knowledge areas.

  That person may have a very high competency (score 5) in 3 areas,
  a medium level of competency (score 3) in 5 areas,
  an introductory level of competency (score 1) in 4 areas,
  and no competency (score 0) in 3 areas.
 
  This creates an area under the curve of 34.
  This is different from a generalist who may score a 1 or 3 in every area.

[1] https://en.wikipedia.org/wiki/Versatilist