I can't speak for anyone else, only myself. Keep in mind, it will vary depending on someone's rank and how many goods they produce, if they feel it's a problem or not. That said, if I see a trade, like your example, from a newer player, I will pick it up purely to help them, because it does not help me (keep in mind, I'm currently rank 278). Plus I take it off the market to help other new players that might be struggling and not understand what cross-tier is all about.
It also depends which direction you're trading. If someone is offering 1000 tier 1 and requesting 250 tier 2, people are more likely to pick up those trades. These type scenarios are not usually problems for anyone.
When cross-tier trading becomes an irritant for some players, is when a person is asking 10,000 steel and offering 2500 crystal (for example). The reason they typically, but not always, do this is because they want to use land for tier 2 and 3 goods (higher ranking, valued, and producing buildings) and less land for tier 1, so they rely on other players to use their land for tier 1 to help out the higher ranked members. Personally, it feels to me like it's using other members.