Yes, the holodeck is just as prone to malfunctioning, but they don't depend on the holodeck for adventures. The holodeck was used either to forward character development, or provide an alternative setting for a nonsense storyline. Only very rarely did it have any real impact on what was going on - most notoriously Picard shooting borg with a tommy gun, and the whole thing in Voyager when the ship gets captured and half the ship turned into a hunting ground (cue allies vs nazis fighting).
What I mean by teleporters being unreliable is, for example, what happened in the latest star trek movie. They need to plant some explosives on a drill, and evacuate people, but OH NO the teleporters aren't working so we have to "space jump". But that's only because teleporters in themselves are such gamechangers that they NEED to be disabled in most scenarios for the plot to have any meaning. Someone planted a nuke in a facility? Teleport in, disable, teleport out, done and done in 2 minutes. That wouldn't work. So the teleporters can't go through the radiation/shielding and now you have a plot. And that's why the teleporters are on the very top of my list of "unreliable junk".
