No. The massive stars that produce these elements have very brief lives. What's different is that the metallicity of later stars is higher than earlier stars. I

No. The massive stars that produce these elements have very brief lives. What's different is that the metallicity of later stars is higher than earlier stars. In essence, the earliest stars were formed from gas that had virtually no metals in them and because of that could grow much larger. But after their death, they polluted the ISM with metals which prevented later generations from becoming as massive.