Update 11.18.2020 - some bugs were fixed, but new information about another bugs was added to the post, thx Russían - area-52
Hello, Blizzard’s and caring players!
Despite the fact that a similar topic has been raised more than once, I want to present the perniciousness of not scaling gear at low levels. Dear twinks, since you are so afraid of being responsible for using a poorly scaled gear - I attach a link only to my character (https://worldofwarcraft.com/en-gb/character/eu/outland/minassa) with an overgear on the EU account, so don’t write about “envy” 
1. Gems
1.1. Steady Talasite (https://www.wowhead.com/item=33782/steady-talasite) from TBC Jewelry give +4 to armor and +6 to stamina, but another “steady” gems give less stats.
1.2. Thundering Skyfire Diamond (https://www.wowhead.com/item=32410/thundering-skyfire-diamond) and Mystical Skyfire Diamond (https://www.wowhead.com/item=25893/mystical-skyfire-diamond) give unscaled buff.
2. 59 ilvl heads
This gear was obtained before a quick nerf at the beginning of the prepatch - it’s currently with correct scaling. But, the problem is that the direct gear IP was not scaled (those who managed to do it still have this gear 59 ilvl)
Let’s compare the characteristics:
Bartered Vrykul Facemask (59 ilvl) (https://www.wowhead.com/item=180029/bartered-vrykul-facemask ) give 17 int., 25 stam., 19 crit. and 15 haste / for example – Hood of Arcane Mystery (25 ilvl) (https://www.wowhead.com/item=109970/hood-of-arcane-mystery ) give 6 int., 9 stam., 7 crit. and 6 mastery
3. The Artifact Weapons 49 ilvl
A couple of days after the release of the patch, a fix was made to scaling things from the Legion’s dungeons - but, unfortunately, this did not affect the relics of artifacts already inserted into the artifact. Those who managed to insert two relics have +29 ilvl, and those who inserted after the nerf - only + 11 ilvl.
Let’s compare the characteristics of the artifacts weapons of 49 ilvl and 31 ilvl:
Light’s Wrath (49 ilvl)- 61 int., 21 stam., 13 haste, 13 mastery
Light’s Wrath (31 ilvl)- 35 int., 12 stam., 7 haste., 7 mastery
4. 36 ilvl gear of rares «WoD» + possibility to wear items with a level limit
Part 44 ilvl gear turned into 36 ilvl, which, according to the information plate, can only be worn by characters with 30 lvl (this isn’t only a Soultwisting Staff (https://www.wowhead.com/item=119410/soultwisting-staff ) and Cowl of the Unraveller (https://www.wowhead.com/item=119354/cowl-of-the-unravelle ), also many other things) -
but despite the above, I CAN STILL WORN THEM ON 20 lvl CHARACTER! Why?!
5. Trinket Pit Fighter (https://www.wowhead.com/item=74034/pit-fighter) has no level requirement.
Conclusion
The main problem with these things is the lack of scaling. Since the patch, in fact, came out very raw, I would like to remind Blizzard’s employees about such a problem, which is relevant for low lvl characters.
And now, friends, I would like to say a final word about twinks - dear comrades, your unwillingness to admit the problem in these things only demonstrates your shortsightedness. Start farming gear from TBC and insert gems. If you cannot play without the above big exploit, this is only your problem . Trials and newbies should not suffer from the carelessness of Blizzard employees and your desire to assert themselves, killing them in one hit on BG or «open world».