Kjoery, go back and read what I said about my latest fey mood. I got a legendary stonecarver in Early Spring of the 2nd year. My miner of course was also legendary by that point, so that means after 1 year of playing, with a population of 25, I had 2 legendary dwarves. Almost TEN PERCENT of my fortress consisted of LEGENDS. How can you say that's not way too many?! And usually the % goes up from there if anything. In my longest-running fortress before I got bored, I had 6 of my 7 starters legendary by the end of the 4th year, and the 7th was a "Great Marksdwarf" so he was getting pretty close too. Plus all but the newest of my immigrant miners had gone legendary (although I didn't get very many that game) and about a third to half of my engravers had gone legendary, plus I had a legendary jeweler and a legendary woodcutter and a legendary craftsdwarf of some sort and a legendary metal crafter. Oh, and a legendary carpenter. That's like... 16 or 17 legendary dwarves, unless I'm forgetting some, and I stopped playing that game when it had a population of 130.
OK, so only 5 of those were actually from strange moods. Really mining/engraving get to legendary a little bit too fast, too. But still, having so many easy legendaries from moods just kills all the meaning of being legendary. "Oh yay, another legend. Toss all his masterpieces onto the pile with everyone else's."
These are supposed to be LEGENDS here we're talking about. They should be rare, not so common that your announcement box gets flooded with spam about them making masterpieces (and I didn't even have most of those legends doing anything that produced masterpieces).