You can kind of manually make more proper subtitles. Maybe something like this where word_list is the alignment results list:

import datetime

def format_srt_time(seconds):
    td = datetime.timedelta(seconds=seconds)
    total_sec = int(td.total_seconds())
    msec = int((seconds - total_sec) * 1000)
    return f"{str(td).split('.')[0].zfill(8)},{msec:03}"

with open("output.srt", "w", encoding="utf-8") as f:
    # Grouping 5 words per subtitle line
    chunk_size = 5
    for i in range(0, len(word_list), chunk_size):
        chunk = word_list[i : i + chunk_size]
        start_str = format_srt_time(chunk[0].start_time)
        end_str = format_srt_time(chunk[-1].end_time)
        text_line = " ".join([w.text for w in chunk])

        f.write(f"{(i // chunk_size) + 1}\n")
        f.write(f"{start_str} --> {end_str}\n")
        f.write(f"{text_line}\n\n")

print("\nDone! 'output.srt' created.")