chaining in subject line

chaining works in the body so why not the subject line? that’s pretty stupid

with chaining i mean {{
quick question |
quick question {{firstName}} |
Quick Question |
Quick Question {{firstName}} |
{{firstName}} - quick question |
{{firstName}} - {{SenderName}} |
{{CompanyName}} - {{SenderCompany}} |
{{firstName}} <> {{SenderName}} |
{{CompanyName}} <> {{SenderCompany}} |
{{firstName}} x {{SenderName}} |
{{CompanyName}} x {{SenderCompany}} |
thoughts? |
Thoughts? |
thoughts {{firstName}}? |
Thoughts {{firstName}}? |
Thought you’d like this |
Thought you’d like this, {{firstName}} |
Thought this might interest you |
Thought this might interest you, {{firstName}} |
This might interest you |
This might interest you, {{firstName}} |
Question about {{companyName}} |
question about {{companyName}} |
question for {{companyName}} |
question re: {{companyName}} |
Weird question {{firstName}}? |
weird question {{firstName}}? |
open to this? |
Open to this? |
open to this {{firstName}}? |
Open to this {{firstName}}? |
}}

and NO, you can’t always but the variable at the end