Technically they have been scrdest, unless their wiki is out of date and there was another merge with the main tgstation code.
Well, not sure now, but the wiki is SURE AS HELL out of date (it got locked due to adbots, which have done a considerable amount of harm to the wiki, but they are updating some things, like the new chemistry recipes.
Oh, also, they are introducing xenoarcheology. Which happens to be MASSIVE and COMPLICATED AS FUCK, from what I've seen. Think of it as being Gordon Freeman in HL1 except not being reduced to pushing carts and doing the actual physicsizing with the samples instead.
Oh, and as for the bottles, those are actually one of the robust Chemist tactics: grab an empty bottle, fill it with something fun on contact (usually poly), clobber your target over the head with the bottle. Enjoy them being horribly, horribly burned by acid and wounded by glass shards now embedded in their face.
You could also use that as Virologist, albeit a stealthier virologist is better off slipping some infected blood into drinks and bottles and waiting for someone to drink it or have it used in a cocktail.
Another note, while syringes are usually used for traitoring as Chemist, few people notice Droppers which can also be used for such purposes. Furthermore, Droppers allow you to apply your Mindbreaker/Poly Acid mix straight to your victim's eyes, which sucks when your target has glasses or a helmet, but if they don't, they may wave goodbye to their retinas.