Should you get rid of it? Can’t answer that.
What I can answer is that the coil flash dryer, quartz tubes, the sun, Calrods all produce “Infra Red it is a wave length” produced by many different sources. Simply put not scientific The more orange/non visible it is the longer the Wave length is, the more yellow white the shorter the wave length is however it is all still in the “Infra Red” spectrum.
Likely answer: no don’t get rid of your “Infra Red flash dryer” to buy another “Infra Red” flash dryer.
Unless: it is very uneven, which is unlikely but possible, put is 2 - 3 inches above the substrate on shirt 3 it will likely be even enough and not effect your ability to produce a quality garment.