JSFiddle - React, Tailwind, and code Playground

HTML

<TR><TD nowrap="true" valign="top" width="190px" class="ms-formlabel"><H3 class="ms-standardheader">
            <nobr>Who will be developing the propose site?</nobr>
        </H3></TD>
            <TD valign="top" class="ms-formbody" width="400px">
            <!-- FieldName="Who will be developing the propose site?"
                 FieldInternalName="Who_x0020_will_x0020_be_x0020_de"
                 FieldType="SPFieldChoice"
              -->
                <span id="span1" dir="none"><table cellpadding="0" cellspacing="1">
        <tr>
            <td><span class="ms-RadioText" title="CSMS"><input id="ctl00_m_g_7d3ef79b_83fe_4a1f_a469_42a8746f064e_ctl00_ctl04_ctl07_ctl00_ctl00_ctl04_ctl00_ctl00" type="radio" name="ctl00$m$g_7d3ef79b_83fe_4a1f_a469_42a8746f064e$ctl00$ctl04$ctl07$ctl00$ctl00$ctl04$ctl00$RadioButtons" value="ctl00" checked="checked" /><label for="ctl00_m_g_7d3ef79b_83fe_4a1f_a469_42a8746f064e_ctl00_ctl04_ctl07_ctl00_ctl00_ctl04_ctl00_ctl00">CSMS</label></span></td>
        </tr><tr>
            <td><span class="ms-RadioText" title="Site Administrator"><input id="ctl00_m_g_7d3ef79b_83fe_4a1f_a469_42a8746f064e_ctl00_ctl04_ctl07_ctl00_ctl00_ctl04_ctl00_ctl01" type="radio" name="ctl00$m$g_7d3ef79b_83fe_4a1f_a469_42a8746f064e$ctl00$ctl04$ctl07$ctl00$ctl00$ctl04$ctl00$RadioButtons" value="ctl01" /><label for="ctl00_m_g_7d3ef79b_83fe_4a1f_a469_42a8746f064e_ctl00_ctl04_ctl07_ctl00_ctl00_ctl04_ctl00_ctl01">Site Administrator</label></span></td>
        </tr>
    </table></span></TD></TR>

            <TR><TD nowrap="true" valign="top" width="190px" class="ms-formlabel"><H3 class="ms-standardheader">
            <nobr>Has site administrator attest to development operations of Rules of Road</nobr>
        </H3></TD>
            <TD valign="top" class="ms-formbody" width="400px">
            <!-- FieldName="Has site administrator attest to development operations of Rules of Road"
                 FieldInternalName="Has_x0020_site_x0020_administrat"
      ...

JavaScript

$('#span1 input').change(function(){
    if($(this).val() == 'ctl01')
    {
        $('#span2 input').attr('disabled',true);
    }
    else
    {
        $('#span2 input').attr('disabled',false);
    }
});