Doesn't the virus bud off of the host cell's lipid membrane and not have a protein / capsid membrane for the immune system to be able to fingerprint? The spike

Doesn't the virus bud off of the host cell's lipid membrane and not have a protein / capsid membrane for the immune system to be able to fingerprint? The spikes are the only thing visible to the immune system is my understanding, at least of viable virus. Other innate immune processes destroy any extracellular RNA if the virus is ruptured etc.