otherwise you are going to push all your fermenting beer into the bucket as soon as you build up pressure!
unless you are going to do pressurized transfer you can take the long 'out' dip tube out, for ease of cleaning later. either put a small 'in' tube in its place or just put the poppet back on with no dip tube. it won't seal correctly but it will screw down tight and keep anything from getting in.