Question about Creality Laser Falcon Engraver-5W

I was wondering if it comes with a hood, and if it really needs one for safety. If a hood is necessary, why isn’t that clearly emphasized? It would be great to make this much clearer-maybe even make it standard to include a hood unless you already have one. It should be clearly stated that you really need to buy it with a hood, because otherwise it’s basically a cancer-causing machine. Also, I noticed that LightBurn costs an extra $84. Are there any free software options? LaserGRBL seems okay, but I’m curious if there are other recommendations. Lastly, there’s very little info about the types of paper/card/wood if you need air assist, or other features that make the machine practical to use instead of just selling it off.... A bit more guidance upfront would be helpful-baby steps on how to proceed. Thanks! Oh, and one last thing: if I find that 5 watts isn’t enough or is limiting, am I able to return the machine to upgrade it? Again, having the videos would have let me understand this, they could have watched what you were cutting and doing and the limitations But again, there's not enough information on the machine.... Also, it would be really helpful when selling these to include a comparison-what kinds of materials can a diode laser handle versus other types like UV or CO2? That makes it easier to decide. I know the machine can cut various materials, but the information isn’t clearly broken down. There’s a lot of confusion with the 10-watt model, and it’s hard to tell on the site exactly what the 5-watt version is capable of.