Unfortanately the comic pointed out in your link are the exact reality.
Web design can be an extremly frustrating job for technical introspective guy, it's hard to convince people that your design is the right one, that your are the expert of design. Customers think they know everything about graphic design.
From an enginnering point of view I can tell you that selling graphic design is something of completly different than selling technical know how.
I completly realized this when I tried to do a partnership with a Graphic design agency and I went at their office to talk to them.
I immediately understood what Graphic Designers sell: they sell themselves 1st! They are all well dressed, even their office is reflecting the design in the furnitures they choose and in how they set it up. I also assisted them once when they were talking to a customer who wanted a paper catalog designed by them. They are good in convincing the customer they are great designers, they are the best, and last but not least they can ask a fear price for their job.
Then I went back to my office and looked at it, mine is a cheap IKEA office. I'm an enginner, I'm more introspective person, I'm not good in selling stuff talking to people and convincing them I'm the best graphic design. It's not something bad it's how I am, and I like to be like this.
Unfortuantely my business model can not grow if I rely on web design, because it needs what I explained above, a different way of being, it needs more being good sellers than good technical guy.
Once I understood this I simply realized that the only way to make money for me is to sell stuff on the interent, and on that side I'm quite good in it. I can concentrate myself in what I'm good at: doing a nice modern looking website, with technical knowledge of how to push the visitors to action etc, etc.
I noticed I started having good results both in terms of orders (money) and also in terms of self confidence. And last but not least I stopped to feel frustrated by idious customer (like the one in the comic) that most times do not understand the value of a website and they just poke their nose in graphic filling it up with tons of crap ideas (and sadly they expect you not to charge them for all those graphic revisions, or even worst they heard the friend of they sister's of their hunt that is unenployed and does website for fun for 100$, so they think you are scerwing them up already).