Following a guide for install to ComfyUI but UI is still telling me it can't locate certain files

[Jono1991]

For context here's the guide I'm using that link to this GitHub support page:

https://comfyui-wiki.com/en/tutorial/advanced/ltx-video-workflow-step-by-step-guide

I don't know if this is outdated but it seems that ComfyUI is expecting me to rename a bunch of files. This is the error I'm getting, if it lets me attach this as a screenshot:

The only file location that really confused me was when it was asking me to put files in '\models\text_encoders\PixArt-XL-2-1024-MS\text_encoder', but I seemed to be able to 'find missing nodes' using the Manager and 'fix' nodes I tried to install already. I'm not sure if I should just try and uninstall and reinstall, but I'm not sure how in a way that doesn't mean I have to download GBs of data again.