Why didn't VALVe put the Workshop in HL1? -Is it the GoldSrc Engine that is difficult to put in the Workshop and was never designed to put in the Workshop (I believe not, as HL1 as well as HL2 is easy to modify and port 3d asset files, sound, etc.)? -HL2 is considered to be VALVe's best game and it has more affection than HL1 (HL2 is my favorite and my game of life, but HL1 is also the game of life for some and it should have that, look at TF2, Half-Life Alyx , Source Filmmaker, Portal 2, Left 4 Dead 2, CS2). -I will never understand the VALVe engineers (Wow, in 2023 they slightly increased the limits of the GoldSrc Engine and the same thing happened in 2024 in the Source Engine). You'll understand.
i think it may be a bit too hard to implement since half life 1 and any other goldsrc games wasnt designed to be connected to steam back then and so, many people just got mods and custom content via installing it manually or by joining a modded servers. and also it may conflicting a bit with some pirated goldsrc games if they're going to implement workshop support especially with cs 1.6
they did it for hl2 because they already had a steam workshop implementation for other source games so it wouldn't be hard to adapt it for hl2, unlike with the first game where they would've had to do it from scratch
Same reason why the SC Team hasn't added a workshop to Sven-Coop...