I'm assuming I'm one of the three reviews you're calling out since I had a very short, brief and I was hoping concise review of the ZS10 Pro (and ZSN Pro), which came from Linsoul.
I apologize it was short, and I've been alternating between short and long format reviews more recently because I am trying to listen to a lot of different stuff because people ask me to (not saying Linsoul or other companies, but people on HF or Reddit or my own personal interests), as well as just trying a different format. I have a very busy life, with a full-time (+more) job that is completely different than audio, and a lot of hobbies and family to spend time with. I'm not a professional reviewer, and if I was, I am doing a horrible job at is, as I'm getting paid exactly $0 for this (besides random review samples which I usually give medicore reviews to anyway). I admit, my ZS10 Pro review was short and much shorter than the one before that which was the Solaris (which I paid for) and after that (the DM7). I just find that I will spend more effort on something that'll cost more if I have multiple things in my queue, and part of this is based on what comments and questions I've received. I get a lot more very specific comments on higher priced products than I ever do on budget stuff and I need to organize my free time in the most effective way possible. I'm always available to answer questions.
My ZS10 Pro review was meant to be short and to the point though. I recommended it, and that's not very often for me to recommend a KZ IEM. (Only the ZSN is the other one I recommend).
As for Linsoul comments - I full support/backup
@B9Scrambler 's comments. Lillian (of Linsoul) just sends reviewers stuff and doesn't typically request any timeline unless it's leading up to a pre-release event, but even then (and I've missed one time before) she's not pressuring you. Most of the IEMs I've been sent have gotten bad to average reviews and only a small handful have been well received by me. So I'm happy with this honest relationship and I've spent money on their store to support their nice service.
I have also gotten pressure from other people about changing my score (higher of course) and that's really lame. Email exchange quickly ended after that.
Anyway, if there's any questions you have on the ZS10 Pro, I can try to answer them. I think they are a good budget IEM. I still recommend the Tin T3 over it though if you're ok spending a little bit more if you are looking for this type of sound signature.