Funny...I've bought two houses that didn't have inside pics.
My general rule is that I won't even go look at a house unless I can see pics online first.
First house (2004), looked at a bunch of houses and couldn't find anything I liked. A listing kept popping up with no interior pics, but I finally read the description of the rooms, and they met all my requirements.
Went with my realtor to look at it, and was sold on the spot. It was by-far the best house I'd looked at.
House I live in now (since 2013) - same thing. I couldn't find anything I wanted to put in an offer on. This house kept popping up on HAR but with no pics. I finally googled the address and pictures came up (on HAR - not sure what happened there). Went to look at it, and the rest is history. Put in an offer that day.
It is a pet peeve of mine, but there are crazy people like me who will work around it, if desperate enough.
As a side note, in both cases, the houses were new construction. It seems to be a more prevalent issue with those listings.