dealers
The vast majority of dealers have learned their "blackjack strategy" from the players that they deal too. Procedure makes them offer even money separately from insurance I believe to prevent confusion on the part of a player.
I got away with this once years ago and might try it in a new place someday.
Of course, I generally will only take even money when it is warranted but in this case it was not warranted and not offered. The dealer did offer insurance which I passed on, and then turned a blackjack. I asked her why she did not offer me even money and she replied that she forgot, got the pit and the pit paid me even money and did not even give me a lesson that the two things are the same thing in the case of a natural.
So you actually do have two chances to insure a blackjack.
Though dealers would be giving good advice to players by letting them know that even money is a bad bet, dealers do not know this. Dealers, want tokes and if you land up pushing a guys blackjack it feels bad for the player and reduces the toke rate.
Overall, the feeling amongst the vast majority of players and dealers is that anytime the player gets paid it is a good thing, even if you have to take a discount to get it. The fact that the discount is too large is missed by them, but I do not think the offering or even pushing of it is knowingly devious by the dealers.
ihate17----defender of dealer ignorance!