Even though this is a humble idea, I'm afraid that CubeCraft isn't the place for this.
To start off, cancer is a terrible disease, and I genuinely hope none of us ever have to deal with it. I am sorry for Techno, and wish my condolences to their relatives.
However, CubeCraft is a Minecraft-server, and I don't feel this is the correct place to adress the death of a content creator, especially one that is not related to the server. I'm sure a lot of people have heard about this tragic thing, and I feel like posting an announcement on Discord is somewhat redundant as, again, I'm sure a lot of people have heard about this, and (harshly put), it's not too relevant to a part of our players, especially the younger ones who don't know him as well as some OG's do.
The mental health section here on the forums is dedicated to self-help, and making sure this server is and remains a fun place, and I don't feel like it belongs there, however if you'd wish I think it's within the rules (Don't quote me on this, I haven't read the new rules) to post something about him in the Lobby.
For those wanting to make a small donation or just want to know more about this horrific disease, make sure to check out the dedicated websites for your country, I'll list some. That's the way to tackle this disease and hopefully find a way to cure it in the future.
United Kingdom:
here
United States of America:
here
The Netherlands:
here
Spain:
here